31057455000 has 320 divisors, whose sum is σ = 113993510400. Its totient is φ = 6949440000.

The previous prime is 31057454983. The next prime is 31057455007. The reversal of 31057455000 is 55475013.

It is a super-2 number, since 2×31057455000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31057455007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2137761 + ... + 2152239.

It is an arithmetic number, because the mean of its divisors is an integer number (356229720).

Almost surely, 2^31057455000 is an apocalyptic number.

31057455000 is a gapful number since it is divisible by the number (30) 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 31057455000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56996755200).

31057455000 is an abundant number, since it is smaller than the sum of its proper divisors (82936055400).

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

31057455000 is a wasteful number, since it uses less digits than its factorization.

31057455000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14532 (or 14513 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The spelling of 31057455000 in words is "thirty-one billion, fifty-seven million, four hundred fifty-five thousand".