31214403564 has 48 divisors (see below), whose sum is σ = 75201853440. Its totient is φ = 10066648320.

The previous prime is 31214403559. The next prime is 31214403611. The reversal of 31214403564 is 46530441213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998417 + ... + 2013975.

It is an arithmetic number, because the mean of its divisors is an integer number (1566705280).

Almost surely, 2^31214403564 is an apocalyptic number.

It is an amenable number.

31214403564 is an abundant number, since it is smaller than the sum of its proper divisors (43987449876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31214403564 is a wasteful number, since it uses less digits than its factorization.

31214403564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20990 (or 20988 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 31214403564 its reverse (46530441213), we get a palindrome (77744844777).

It can be divided in two parts, 31214 and 403564, that added together give a triangular number (434778 = T₉₃₂).

The spelling of 31214403564 in words is "thirty-one billion, two hundred fourteen million, four hundred three thousand, five hundred sixty-four".