31303204142 has 32 divisors (see below), whose sum is σ = 53860094400. Its totient is φ = 13366384128.

The previous prime is 31303204139. The next prime is 31303204147. The reversal of 31303204142 is 24140230313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303204147) 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, 5022284 + ... + 5028512.

It is an arithmetic number, because the mean of its divisors is an integer number (1683127950).

Almost surely, 2^31303204142 is an apocalyptic number.

31303204142 is a deficient number, since it is larger than the sum of its proper divisors (22556890258).

31303204142 is a wasteful number, since it uses less digits than its factorization.

31303204142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31303204142 its reverse (24140230313), we get a palindrome (55443434455).

The spelling of 31303204142 in words is "thirty-one billion, three hundred three million, two hundred four thousand, one hundred forty-two".