31023331142 has 16 divisors (see below), whose sum is σ = 47274796800. Its totient is φ = 15266487432.

The previous prime is 31023331123. The next prime is 31023331159. The reversal of 31023331142 is 24113332013.

It is a congruent number.

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, 311642 + ... + 398957.

It is an arithmetic number, because the mean of its divisors is an integer number (2954674800).

Almost surely, 2^31023331142 is an apocalyptic number.

31023331142 is a deficient number, since it is larger than the sum of its proper divisors (16251465658).

31023331142 is a wasteful number, since it uses less digits than its factorization.

31023331142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710947.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31023331142 its reverse (24113332013), we get a palindrome (55136663155).

The spelling of 31023331142 in words is "thirty-one billion, twenty-three million, three hundred thirty-one thousand, one hundred forty-two".