31577053332 has 192 divisors, whose sum is σ = 84994560000. Its totient is φ = 9035712000.

The previous prime is 31577053331. The next prime is 31577053381. The reversal of 31577053332 is 23335077513.

It is a super-2 number, since 2×31577053332² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31577053331) 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, 63280419 + ... + 63280917.

It is an arithmetic number, because the mean of its divisors is an integer number (442680000).

Almost surely, 2^31577053332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31577053332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42497280000).

31577053332 is an abundant number, since it is smaller than the sum of its proper divisors (53417506668).

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

31577053332 is a wasteful number, since it uses less digits than its factorization.

31577053332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 39.

The spelling of 31577053332 in words is "thirty-one billion, five hundred seventy-seven million, fifty-three thousand, three hundred thirty-two".