31122075961 has 8 divisors (see below), whose sum is σ = 31432302720. Its totient is φ = 30812208048.

The previous prime is 31122075947. The next prime is 31122075977. The reversal of 31122075961 is 16957022113.

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

It is a cyclic number.

It is not a de Polignac number, because 31122075961 - 2³³ = 22532141369 is a prime.

It is a super-2 number, since 2×31122075961² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31122075961.

It is not an unprimeable number, because it can be changed into a prime (31123075961) 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, 86320 + ... + 263998.

It is an arithmetic number, because the mean of its divisors is an integer number (3929037840).

Almost surely, 2^31122075961 is an apocalyptic number.

It is an amenable number.

31122075961 is a deficient number, since it is larger than the sum of its proper divisors (310226759).

31122075961 is a wasteful number, since it uses less digits than its factorization.

31122075961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179423.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 31122075961 in words is "thirty-one billion, one hundred twenty-two million, seventy-five thousand, nine hundred sixty-one".