31030222222231 has 16 divisors (see below), whose sum is σ = 32917077315360. Its totient is φ = 29150217671680.

The previous prime is 31030222222213. The next prime is 31030222222301. The reversal of 31030222222231 is 13222222203013.

It is a cyclic number.

It is not a de Polignac number, because 31030222222231 - 2¹⁷ = 31030222091159 is a prime.

It is a super-2 number, since 2×31030222222231² (a number of 28 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 = 31030222222196 and 31030222222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030222222211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85531440 + ... + 85893466.

It is an arithmetic number, because the mean of its divisors is an integer number (2057317332210).

Almost surely, 2^{31030222222231} is an apocalyptic number.

31030222222231 is a deficient number, since it is larger than the sum of its proper divisors (1886855093129).

31030222222231 is a wasteful number, since it uses less digits than its factorization.

31030222222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371474.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31030222222231 its reverse (13222222203013), we get a palindrome (44252444425244).

The spelling of 31030222222231 in words is "thirty-one trillion, thirty billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred thirty-one".