31012331203 has 16 divisors (see below), whose sum is σ = 35640218880. Its totient is φ = 26434044000.

The previous prime is 31012331143. The next prime is 31012331249. The reversal of 31012331203 is 30213321013.

It is a de Polignac number, because none of the positive numbers 2^k-31012331203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31012331303) 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, 1913508 + ... + 1929646.

It is an arithmetic number, because the mean of its divisors is an integer number (2227513680).

Almost surely, 2^31012331203 is an apocalyptic number.

31012331203 is a deficient number, since it is larger than the sum of its proper divisors (4627887677).

31012331203 is a wasteful number, since it uses less digits than its factorization.

31012331203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17658.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31012331203 its reverse (30213321013), we get a palindrome (61225652216).

The spelling of 31012331203 in words is "thirty-one billion, twelve million, three hundred thirty-one thousand, two hundred three".