31631314253 has 16 divisors (see below), whose sum is σ = 39478178304. Its totient is φ = 24621693360.

The previous prime is 31631314249. The next prime is 31631314261. The reversal of 31631314253 is 35241313613.

It is not a de Polignac number, because 31631314253 - 2² = 31631314249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31631314153) 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, 143975 + ... + 289812.

It is an arithmetic number, because the mean of its divisors is an integer number (2467386144).

Almost surely, 2^31631314253 is an apocalyptic number.

It is an amenable number.

31631314253 is a deficient number, since it is larger than the sum of its proper divisors (7846864051).

31631314253 is a wasteful number, since it uses less digits than its factorization.

31631314253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434752.

The product of its digits is 19440, while the sum is 32.

Adding to 31631314253 its reverse (35241313613), we get a palindrome (66872627866).

The spelling of 31631314253 in words is "thirty-one billion, six hundred thirty-one million, three hundred fourteen thousand, two hundred fifty-three".