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313161480 = 23325869893
BaseRepresentation
bin10010101010100…
…111011100001000
3210211021020210100
4102222213130020
51120132131410
651024045400
710521554142
oct2252473410
9724236710
10313161480
11150853945
1288a63860
134cb58668
142d83bc92
151c75d8c0
hex12aa7708

313161480 has 48 divisors (see below), whose sum is σ = 1017775980. Its totient is φ = 83509632.

The previous prime is 313161421. The next prime is 313161481. The reversal of 313161480 is 84161313.

It can be written as a sum of positive squares in 2 ways, for example, as 251476164 + 61685316 = 15858^2 + 7854^2 .

It is a super-2 number, since 2×3131614802 = 196140225111580800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313161481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434587 + ... + 435306.

Almost surely, 2313161480 is an apocalyptic number.

313161480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313161480 is an abundant number, since it is smaller than the sum of its proper divisors (704614500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313161480 is a wasteful number, since it uses less digits than its factorization.

313161480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869910 (or 869903 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 313161480 is about 17696.3691191159. The cubic root of 313161480 is about 679.0828754989.

The spelling of 313161480 in words is "three hundred thirteen million, one hundred sixty-one thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 869893 1739786 2609679 3479572 4349465 5219358 6959144 7829037 8698930 10438716 13048395 15658074 17397860 20877432 26096790 31316148 34795720 39145185 52193580 62632296 78290370 104387160 156580740 313161480