3131147663731 has 16 divisors (see below), whose sum is σ = 3153463102944. Its totient is φ = 3108937987584.

The previous prime is 3131147663719. The next prime is 3131147663737. The reversal of 3131147663731 is 1373667411313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3131147663731 - 2⁴¹ = 932124408179 is a prime.

It is a super-2 number, since 2×3131147663731² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131147663737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76131585 + ... + 76172701.

It is an arithmetic number, because the mean of its divisors is an integer number (197091443934).

Almost surely, 2^{3131147663731} is an apocalyptic number.

3131147663731 is a deficient number, since it is larger than the sum of its proper divisors (22315439213).

3131147663731 is a wasteful number, since it uses less digits than its factorization.

3131147663731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42390.

The product of its digits is 571536, while the sum is 46.

The spelling of 3131147663731 in words is "three trillion, one hundred thirty-one billion, one hundred forty-seven million, six hundred sixty-three thousand, seven hundred thirty-one".