31431012142 has 16 divisors (see below), whose sum is σ = 47263612032. Its totient is φ = 15676503480.

The previous prime is 31431012131. The next prime is 31431012149. The reversal of 31431012142 is 24121013413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431012149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2880517 + ... + 2891407.

It is an arithmetic number, because the mean of its divisors is an integer number (2953975752).

Almost surely, 2^31431012142 is an apocalyptic number.

31431012142 is a deficient number, since it is larger than the sum of its proper divisors (15832599890).

31431012142 is a wasteful number, since it uses less digits than its factorization.

31431012142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14343.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31431012142 its reverse (24121013413), we get a palindrome (55552025555).

The spelling of 31431012142 in words is "thirty-one billion, four hundred thirty-one million, twelve thousand, one hundred forty-two".