31145151040 has 28 divisors (see below), whose sum is σ = 74164391676. Its totient is φ = 12458060288.

The previous prime is 31145150999. The next prime is 31145151091. The reversal of 31145151040 is 4015154113.

It can be written as a sum of positive squares in 2 ways, for example, as 20150370304 + 10994780736 = 141952^2 + 104856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31145150996 and 31145151014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48663979 + ... + 48664618.

Almost surely, 2^31145151040 is an apocalyptic number.

It is an amenable number.

31145151040 is an abundant number, since it is smaller than the sum of its proper divisors (43019240636).

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

31145151040 is an equidigital number, since it uses as much as digits as its factorization.

31145151040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97328614 (or 97328604 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 31145151040 in words is "thirty-one billion, one hundred forty-five million, one hundred fifty-one thousand, forty".