31000232542 has 8 divisors (see below), whose sum is σ = 46671937632. Its totient is φ = 15442920000.

The previous prime is 31000232521. The next prime is 31000232587. The reversal of 31000232542 is 24523200013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31000232542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28597459 + ... + 28598542.

It is an arithmetic number, because the mean of its divisors is an integer number (5833992204).

Almost surely, 2^31000232542 is an apocalyptic number.

31000232542 is a deficient number, since it is larger than the sum of its proper divisors (15671705090).

31000232542 is a wasteful number, since it uses less digits than its factorization.

31000232542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57196274.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 31000232542 its reverse (24523200013), we get a palindrome (55523432555).

The spelling of 31000232542 in words is "thirty-one billion, two hundred thirty-two thousand, five hundred forty-two".