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312350380 = 22516395813
BaseRepresentation
bin10010100111100…
…001011010101100
3210202202001011121
4102213201122230
51114430203010
650554430324
710511635336
oct2247413254
9722661147
10312350380
1115034a511
12887323a4
134c933414
142d6aa456
151c64d3da
hex129e16ac

312350380 has 24 divisors (see below), whose sum is σ = 659966832. Its totient is φ = 124172352.

The previous prime is 312350377. The next prime is 312350383. The reversal of 312350380 is 83053213.

312350380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (312350377) and next prime (312350383).

It is a super-2 number, since 2×3123503802 = 195125519772288800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312350383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44647 + ... + 51166.

It is an arithmetic number, because the mean of its divisors is an integer number (27498618).

Almost surely, 2312350380 is an apocalyptic number.

It is an amenable number.

312350380 is an abundant number, since it is smaller than the sum of its proper divisors (347616452).

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

312350380 is a wasteful number, since it uses less digits than its factorization.

312350380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95985 (or 95983 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 312350380 is about 17673.4371303377. The cubic root of 312350380 is about 678.4960852161.

The spelling of 312350380 in words is "three hundred twelve million, three hundred fifty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 163 326 652 815 1630 3260 95813 191626 383252 479065 958130 1916260 15617519 31235038 62470076 78087595 156175190 312350380