31853017051 has 4 divisors (see below), whose sum is σ = 31860884104. Its totient is φ = 31845150000.

The previous prime is 31853016983. The next prime is 31853017067. The reversal of 31853017051 is 15071035813.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31853017051 - 2²⁷ = 31718799323 is a prime.

It is a super-2 number, since 2×31853017051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31853016998 and 31853017016.

It is not an unprimeable number, because it can be changed into a prime (31853017081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3927450 + ... + 3935551.

It is an arithmetic number, because the mean of its divisors is an integer number (7965221026).

Almost surely, 2^31853017051 is an apocalyptic number.

31853017051 is a deficient number, since it is larger than the sum of its proper divisors (7867053).

31853017051 is an equidigital number, since it uses as much as digits as its factorization.

31853017051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7867052.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 31853017051 in words is "thirty-one billion, eight hundred fifty-three million, seventeen thousand, fifty-one".