31000203042 has 8 divisors (see below), whose sum is σ = 62000406096. Its totient is φ = 10333401012.

The previous prime is 31000203037. The next prime is 31000203043. The reversal of 31000203042 is 24030200013.

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

31000203042 is an admirable number.

It is a super-2 number, since 2×31000203042² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31000203043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2583350248 + ... + 2583350259.

It is an arithmetic number, because the mean of its divisors is an integer number (7750050762).

Almost surely, 2^31000203042 is an apocalyptic number.

31000203042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31000203042 is a wasteful number, since it uses less digits than its factorization.

31000203042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166700512.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 31000203042 its reverse (24030200013), we get a palindrome (55030403055).

The spelling of 31000203042 in words is "thirty-one billion, two hundred three thousand, forty-two".