31053690 has 24 divisors (see below), whose sum is σ = 80739828. Its totient is φ = 8280960.

The previous prime is 31053667. The next prime is 31053691. The reversal of 31053690 is 9635013.

It can be written as a sum of positive squares in 2 ways, for example, as 28419561 + 2634129 = 5331^2 + 1623^2 .

It is a super-2 number, since 2×31053690² = 1928663325232200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31053691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172431 + ... + 172610.

Almost surely, 2^31053690 is an apocalyptic number.

31053690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31053690 is an abundant number, since it is smaller than the sum of its proper divisors (49686138).

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

31053690 is a wasteful number, since it uses less digits than its factorization.

31053690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345054 (or 345051 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 31053690 is about 5572.5837813352. The cubic root of 31053690 is about 314.3193162617.

The spelling of 31053690 in words is "thirty-one million, fifty-three thousand, six hundred ninety".