31361963604 has 12 divisors (see below), whose sum is σ = 73177915104. Its totient is φ = 10453987864.

The previous prime is 31361963561. The next prime is 31361963621. The reversal of 31361963604 is 40636916313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×31361963604² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306748472 + ... + 1306748495.

It is an arithmetic number, because the mean of its divisors is an integer number (6098159592).

Almost surely, 2^31361963604 is an apocalyptic number.

It is an amenable number.

31361963604 is an abundant number, since it is smaller than the sum of its proper divisors (41815951500).

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

31361963604 is a wasteful number, since it uses less digits than its factorization.

31361963604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613496974 (or 2613496972 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 42.

The spelling of 31361963604 in words is "thirty-one billion, three hundred sixty-one million, nine hundred sixty-three thousand, six hundred four".