31020423142 has 16 divisors (see below), whose sum is σ = 47075933520. Its totient is φ = 15329163168.

The previous prime is 31020423139. The next prime is 31020423143. The reversal of 31020423142 is 24132402013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020423143) 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, 92668 + ... + 265759.

It is an arithmetic number, because the mean of its divisors is an integer number (2942245845).

Almost surely, 2^31020423142 is an apocalyptic number.

31020423142 is a deficient number, since it is larger than the sum of its proper divisors (16055510378).

31020423142 is a wasteful number, since it uses less digits than its factorization.

31020423142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358935.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31020423142 its reverse (24132402013), we get a palindrome (55152825155).

The spelling of 31020423142 in words is "thirty-one billion, twenty million, four hundred twenty-three thousand, one hundred forty-two".