3131723340534 has 32 divisors (see below), whose sum is σ = 6367352150880. Its totient is φ = 1026596793600.

The previous prime is 3131723340461. The next prime is 3131723340539. The reversal of 3131723340534 is 4350433271313.

It is a super-2 number, since 2×3131723340534² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3131723340492 and 3131723340501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131723340539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1085164 + ... + 2727824.

It is an arithmetic number, because the mean of its divisors is an integer number (198979754715).

Almost surely, 2^{3131723340534} is an apocalyptic number.

3131723340534 is an abundant number, since it is smaller than the sum of its proper divisors (3235628810346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131723340534 is a wasteful number, since it uses less digits than its factorization.

3131723340534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647936.

The product of its (nonzero) digits is 272160, while the sum is 39.

The spelling of 3131723340534 in words is "three trillion, one hundred thirty-one billion, seven hundred twenty-three million, three hundred forty thousand, five hundred thirty-four".