31442313012331 has 16 divisors (see below), whose sum is σ = 34201384648704. Its totient is φ = 28732067157024.

The previous prime is 31442313012281. The next prime is 31442313012347. The reversal of 31442313012331 is 13321031324413.

It is a cyclic number.

It is not a de Polignac number, because 31442313012331 - 2⁷ = 31442313012203 is a prime.

It is a super-2 number, since 2×31442313012331² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31442313012293 and 31442313012302.

It is not an unprimeable number, because it can be changed into a prime (31442313012391) 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, 92011 + ... + 7930516.

It is an arithmetic number, because the mean of its divisors is an integer number (2137586540544).

Almost surely, 2^{31442313012331} is an apocalyptic number.

31442313012331 is a deficient number, since it is larger than the sum of its proper divisors (2759071636373).

31442313012331 is a wasteful number, since it uses less digits than its factorization.

31442313012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8025570.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 31442313012331 its reverse (13321031324413), we get a palindrome (44763344336744).

The spelling of 31442313012331 in words is "thirty-one trillion, four hundred forty-two billion, three hundred thirteen million, twelve thousand, three hundred thirty-one".