31437900245 has 4 divisors (see below), whose sum is σ = 37725480300. Its totient is φ = 25150320192.

The previous prime is 31437900229. The next prime is 31437900257. The reversal of 31437900245 is 54200973413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16595107684 + 14842792561 = 128822^2 + 121831^2 .

It is a cyclic number.

It is not a de Polignac number, because 31437900245 - 2⁴ = 31437900229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31437900199 and 31437900208.

It is a congruent number.

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, 3143790020 + ... + 3143790029.

It is an arithmetic number, because the mean of its divisors is an integer number (9431370075).

Almost surely, 2^31437900245 is an apocalyptic number.

It is an amenable number.

31437900245 is a deficient number, since it is larger than the sum of its proper divisors (6287580055).

31437900245 is an equidigital number, since it uses as much as digits as its factorization.

31437900245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287580054.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 31437900245 in words is "thirty-one billion, four hundred thirty-seven million, nine hundred thousand, two hundred forty-five".