315631547949 has 32 divisors (see below), whose sum is σ = 447738520320. Its totient is φ = 197400817152.

The previous prime is 315631547939. The next prime is 315631547981. The reversal of 315631547949 is 949745136513.

It is not a de Polignac number, because 315631547949 - 2⁹ = 315631547437 is a prime.

It is a super-2 number, since 2×315631547949² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315631547939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2272777 + ... + 2407649.

It is an arithmetic number, because the mean of its divisors is an integer number (13991828760).

Almost surely, 2^315631547949 is an apocalyptic number.

It is an amenable number.

315631547949 is a deficient number, since it is larger than the sum of its proper divisors (132106972371).

315631547949 is a wasteful number, since it uses less digits than its factorization.

315631547949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135669.

The product of its digits is 12247200, while the sum is 57.

The spelling of 315631547949 in words is "three hundred fifteen billion, six hundred thirty-one million, five hundred forty-seven thousand, nine hundred forty-nine".