631032042140155 has 4 divisors (see below), whose sum is σ = 757238450568192. Its totient is φ = 504825633712120.

The previous prime is 631032042140111. The next prime is 631032042140207. The reversal of 631032042140155 is 551041240230136.

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

It is not a de Polignac number, because 631032042140155 - 2¹¹ = 631032042138107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63103204214011 + ... + 63103204214020.

It is an arithmetic number, because the mean of its divisors is an integer number (189309612642048).

Almost surely, 2^{631032042140155} is an apocalyptic number.

631032042140155 is a deficient number, since it is larger than the sum of its proper divisors (126206408428037).

631032042140155 is a wasteful number, since it uses less digits than its factorization.

631032042140155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126206408428036.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 631032042140155 in words is "six hundred thirty-one trillion, thirty-two billion, forty-two million, one hundred forty thousand, one hundred fifty-five".