31242401333231 has 6 divisors (see below), whose sum is σ = 34340821300296. Its totient is φ = 28402183030100.

The previous prime is 31242401333179. The next prime is 31242401333243. The reversal of 31242401333231 is 13233310424213.

It is not a de Polignac number, because 31242401333231 - 2¹⁸ = 31242401071087 is a prime.

It is a super-2 number, since 2×31242401333231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242401033231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129100831835 + ... + 129100832076.

It is an arithmetic number, because the mean of its divisors is an integer number (5723470216716).

Almost surely, 2^{31242401333231} is an apocalyptic number.

31242401333231 is a deficient number, since it is larger than the sum of its proper divisors (3098419967065).

31242401333231 is a wasteful number, since it uses less digits than its factorization.

31242401333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258201663933 (or 258201663922 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 31242401333231 its reverse (13233310424213), we get a palindrome (44475711757444).

The spelling of 31242401333231 in words is "thirty-one trillion, two hundred forty-two billion, four hundred one million, three hundred thirty-three thousand, two hundred thirty-one".