31445245051236 has 81 divisors (see below), whose sum is σ = 79683454880211. Its totient is φ = 10455852425904.

The previous prime is 31445245051139. The next prime is 31445245051237. The reversal of 31445245051236 is 63215054254413.

The square root of 31445245051236 is 5607606.

It is a perfect power (a square), and thus also a powerful number.

31445245051236 is a `hidden beast` number, since 3 + 1 + 4 + 4 + 52 + 4 + 50 + 512 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31445245051191 and 31445245051200.

It is not an unprimeable number, because it can be changed into a prime (31445245051237) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17596666735 + ... + 17596668521.

Almost surely, 2^{31445245051236} is an apocalyptic number.

31445245051236 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

31445245051236 is the 5607606-th square number.

It is an amenable number.

31445245051236 is an abundant number, since it is smaller than the sum of its proper divisors (48238209828975).

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

31445245051236 is an frugal number, since it uses more digits than its factorization.

31445245051236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 2315 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 31445245051236 in words is "thirty-one trillion, four hundred forty-five billion, two hundred forty-five million, fifty-one thousand, two hundred thirty-six".