31361403316 has 12 divisors (see below), whose sum is σ = 56221052580. Its totient is φ = 15298245440.

The previous prime is 31361403313. The next prime is 31361403317. The reversal of 31361403316 is 61330416313.

It can be written as a sum of positive squares in 2 ways, for example, as 8575500816 + 22785902500 = 92604^2 + 150950^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31361403313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95613871 + ... + 95614198.

It is an arithmetic number, because the mean of its divisors is an integer number (4685087715).

Almost surely, 2^31361403316 is an apocalyptic number.

It is an amenable number.

31361403316 is a deficient number, since it is larger than the sum of its proper divisors (24859649264).

31361403316 is a wasteful number, since it uses less digits than its factorization.

31361403316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191228114 (or 191228112 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

Adding to 31361403316 its reverse (61330416313), we get a palindrome (92691819629).

The spelling of 31361403316 in words is "thirty-one billion, three hundred sixty-one million, four hundred three thousand, three hundred sixteen".