31042231031 has 24 divisors (see below), whose sum is σ = 36797120640. Its totient is φ = 26103425712.

The previous prime is 31042231001. The next prime is 31042231061. The reversal of 31042231031 is 13013224013.

It is an interprime number because it is at equal distance from previous prime (31042231001) and next prime (31042231061).

It is not a de Polignac number, because 31042231031 - 2¹⁰ = 31042230007 is a prime.

It is a super-2 number, since 2×31042231031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31042230994 and 31042231012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042231001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1443500 + ... + 1464846.

It is an arithmetic number, because the mean of its divisors is an integer number (1533213360).

Almost surely, 2^31042231031 is an apocalyptic number.

31042231031 is a deficient number, since it is larger than the sum of its proper divisors (5754889609).

31042231031 is a wasteful number, since it uses less digits than its factorization.

31042231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21923 (or 21916 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31042231031 its reverse (13013224013), we get a palindrome (44055455044).

The spelling of 31042231031 in words is "thirty-one billion, forty-two million, two hundred thirty-one thousand, thirty-one".