31003431142 has 32 divisors (see below), whose sum is σ = 48237292800. Its totient is φ = 14929367040.

The previous prime is 31003431101. The next prime is 31003431143. The reversal of 31003431142 is 24113430013.

It is a super-2 number, since 2×31003431142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003431143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12720748 + ... + 12723184.

It is an arithmetic number, because the mean of its divisors is an integer number (1507415400).

Almost surely, 2^31003431142 is an apocalyptic number.

31003431142 is a deficient number, since it is larger than the sum of its proper divisors (17233861658).

31003431142 is a wasteful number, since it uses less digits than its factorization.

31003431142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31003431142 its reverse (24113430013), we get a palindrome (55116861155).

The spelling of 31003431142 in words is "thirty-one billion, three million, four hundred thirty-one thousand, one hundred forty-two".