31330013442 has 32 divisors (see below), whose sum is σ = 77120034432. Its totient is φ = 8262860544.

The previous prime is 31330013417. The next prime is 31330013467. The reversal of 31330013442 is 24431003313.

It is an interprime number because it is at equal distance from previous prime (31330013417) and next prime (31330013467).

It is a super-3 number, since 3×31330013442³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28689943 + ... + 28691034.

It is an arithmetic number, because the mean of its divisors is an integer number (2410001076).

Almost surely, 2^31330013442 is an apocalyptic number.

31330013442 is an abundant number, since it is smaller than the sum of its proper divisors (45790020990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31330013442 is a wasteful number, since it uses less digits than its factorization.

31330013442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57381002.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31330013442 its reverse (24431003313), we get a palindrome (55761016755).

The spelling of 31330013442 in words is "thirty-one billion, three hundred thirty million, thirteen thousand, four hundred forty-two".