313012161 has 32 divisors (see below), whose sum is σ = 578150400. Its totient is φ = 162602640.

The previous prime is 313012153. The next prime is 313012171. The reversal of 313012161 is 161210313.

It is not a de Polignac number, because 313012161 - 2³ = 313012153 is a prime.

It is a super-2 number, since 2×313012161² = 195953225867779842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313012171) 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 31 ways as a sum of consecutive naturals, for example, 73201 + ... + 77358.

It is an arithmetic number, because the mean of its divisors is an integer number (18067200).

Almost surely, 2^313012161 is an apocalyptic number.

It is an amenable number.

313012161 is a deficient number, since it is larger than the sum of its proper divisors (265138239).

313012161 is a wasteful number, since it uses less digits than its factorization.

313012161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150586 (or 150580 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 313012161 is about 17692.1496997962. The cubic root of 313012161 is about 678.9749268282.

Adding to 313012161 its reverse (161210313), we get a palindrome (474222474).

The spelling of 313012161 in words is "three hundred thirteen million, twelve thousand, one hundred sixty-one".