31607751053 has 4 divisors (see below), whose sum is σ = 31608658620. Its totient is φ = 31606843488.

The previous prime is 31607750981. The next prime is 31607751163. The reversal of 31607751053 is 35015770613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35015770613 = 1871 ⋅18715003.

It can be written as a sum of positive squares in 2 ways, for example, as 23912601769 + 7695149284 = 154637^2 + 87722^2 .

It is a cyclic number.

It is not a de Polignac number, because 31607751053 - 2²² = 31603556749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31607750998 and 31607751016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31607754053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399368 + ... + 471921.

It is an arithmetic number, because the mean of its divisors is an integer number (7902164655).

Almost surely, 2^31607751053 is an apocalyptic number.

It is an amenable number.

31607751053 is a deficient number, since it is larger than the sum of its proper divisors (907567).

31607751053 is an equidigital number, since it uses as much as digits as its factorization.

31607751053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907566.

The product of its (nonzero) digits is 66150, while the sum is 38.

The spelling of 31607751053 in words is "thirty-one billion, six hundred seven million, seven hundred fifty-one thousand, fifty-three".