31222662161 has 8 divisors (see below), whose sum is σ = 31751705664. Its totient is φ = 30695472720.

The previous prime is 31222662143. The next prime is 31222662193. The reversal of 31222662161 is 16126622213.

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 31222662161 - 2¹⁴ = 31222645777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31222662101) 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, 429530 + ... + 496931.

It is an arithmetic number, because the mean of its divisors is an integer number (3968963208).

Almost surely, 2^31222662161 is an apocalyptic number.

It is an amenable number.

31222662161 is a deficient number, since it is larger than the sum of its proper divisors (529043503).

31222662161 is an equidigital number, since it uses as much as digits as its factorization.

31222662161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927031.

The product of its digits is 10368, while the sum is 32.

The spelling of 31222662161 in words is "thirty-one billion, two hundred twenty-two million, six hundred sixty-two thousand, one hundred sixty-one".