31284649396 has 48 divisors (see below), whose sum is σ = 73507996800. Its totient is φ = 11251221120.

The previous prime is 31284649387. The next prime is 31284649399. The reversal of 31284649396 is 69394648213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31284649399) 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, 3902671 + ... + 3910678.

It is an arithmetic number, because the mean of its divisors is an integer number (1531416600).

Almost surely, 2^31284649396 is an apocalyptic number.

It is an amenable number.

31284649396 is an abundant number, since it is smaller than the sum of its proper divisors (42223347404).

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

31284649396 is a wasteful number, since it uses less digits than its factorization.

31284649396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813384 (or 7813382 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 55.

The spelling of 31284649396 in words is "thirty-one billion, two hundred eighty-four million, six hundred forty-nine thousand, three hundred ninety-six".