31551245348 has 96 divisors (see below), whose sum is σ = 69254922240. Its totient is φ = 12280245120.

The previous prime is 31551245311. The next prime is 31551245351. The reversal of 31551245348 is 84354215513.

It is a super-2 number, since 2×31551245348² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1043183 + ... + 1073001.

It is an arithmetic number, because the mean of its divisors is an integer number (721405440).

Almost surely, 2^31551245348 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 31551245348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34627461120).

31551245348 is an abundant number, since it is smaller than the sum of its proper divisors (37703676892).

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

31551245348 is a wasteful number, since it uses less digits than its factorization.

31551245348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29937 (or 29935 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The spelling of 31551245348 in words is "thirty-one billion, five hundred fifty-one million, two hundred forty-five thousand, three hundred forty-eight".