31469645064 has 256 divisors, whose sum is σ = 99721601280. Its totient is φ = 8127774720.

The previous prime is 31469645063. The next prime is 31469645101. The reversal of 31469645064 is 46054696413.

It is not an unprimeable number, because it can be changed into a prime (31469645063) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3087144 + ... + 3097320.

It is an arithmetic number, because the mean of its divisors is an integer number (389537505).

Almost surely, 2^31469645064 is an apocalyptic number.

31469645064 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31469645064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49860800640).

31469645064 is an abundant number, since it is smaller than the sum of its proper divisors (68251956216).

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

31469645064 is a wasteful number, since it uses less digits than its factorization.

31469645064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10280 (or 10276 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 31469645064 in words is "thirty-one billion, four hundred sixty-nine million, six hundred forty-five thousand, sixty-four".