Search a number
-
+
312453031 = 11121323417
BaseRepresentation
bin10010100111111…
…010011110100111
3210202221020222111
4102213322132213
51114441444111
651000541451
710512543532
oct2247723647
9722836874
10312453031
1115040a650
1288781887
134c96b067
142d6d5a19
151c66da21
hex129fa7a7

312453031 has 8 divisors (see below), whose sum is σ = 341153424. Its totient is φ = 283801920.

The previous prime is 312452983. The next prime is 312453103. The reversal of 312453031 is 130354213.

312453031 is nontrivially palindromic in base 5.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-312453031 is a prime.

It is a super-2 number, since 2×3124530312 = 195253793162173922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312452993 and 312453011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312453331) 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, 1635 + ... + 25051.

It is an arithmetic number, because the mean of its divisors is an integer number (42644178).

Almost surely, 2312453031 is an apocalyptic number.

312453031 is a deficient number, since it is larger than the sum of its proper divisors (28700393).

312453031 is a wasteful number, since it uses less digits than its factorization.

312453031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24641.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 312453031 is about 17676.3409958057. The cubic root of 312453031 is about 678.5704041837.

The spelling of 312453031 in words is "three hundred twelve million, four hundred fifty-three thousand, thirty-one".

Divisors: 1 11 1213 13343 23417 257587 28404821 312453031