245000642531 has 8 divisors (see below), whose sum is σ = 245456060304. Its totient is φ = 244545454080.

The previous prime is 245000642503. The next prime is 245000642543. The reversal of 245000642531 is 135246000542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245000642531 - 2²² = 244996448227 is a prime.

It is a super-2 number, since 2×245000642531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245000642591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160656 + ... + 2271218.

It is an arithmetic number, because the mean of its divisors is an integer number (30682007538).

Almost surely, 2^245000642531 is an apocalyptic number.

245000642531 is a deficient number, since it is larger than the sum of its proper divisors (455417773).

245000642531 is a wasteful number, since it uses less digits than its factorization.

245000642531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114661.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 245000642531 in words is "two hundred forty-five billion, six hundred forty-two thousand, five hundred thirty-one".