31001231042 has 16 divisors (see below), whose sum is σ = 49346933400. Its totient is φ = 14556315648.

The previous prime is 31001231039. The next prime is 31001231069. The reversal of 31001231042 is 24013210013.

It can be written as a sum of positive squares in 4 ways, for example, as 28062615361 + 2938615681 = 167519^2 + 54209^2 .

It is a super-2 number, since 2×31001231042² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 31001231042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000103 + ... + 1030634.

Almost surely, 2^31001231042 is an apocalyptic number.

31001231042 is a deficient number, since it is larger than the sum of its proper divisors (18345702358).

31001231042 is a wasteful number, since it uses less digits than its factorization.

31001231042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031205.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31001231042 its reverse (24013210013), we get a palindrome (55014441055).

The spelling of 31001231042 in words is "thirty-one billion, one million, two hundred thirty-one thousand, forty-two".