31134548538 has 36 divisors (see below), whose sum is σ = 69793370010. Its totient is φ = 10019017008.

The previous prime is 31134548521. The next prime is 31134548551. The reversal of 31134548538 is 83584543113.

It is a happy number.

31134548538 is a `hidden beast` number, since 3 + 1 + 134 + 5 + 485 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26303325489 + 4831223049 = 162183^2 + 69507^2 .

It is a super-2 number, since 2×31134548538² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31134548493 and 31134548502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4027545 + ... + 4035267.

Almost surely, 2^31134548538 is an apocalyptic number.

31134548538 is an abundant number, since it is smaller than the sum of its proper divisors (38658821472).

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

31134548538 is an frugal number, since it uses more digits than its factorization.

31134548538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15483 (or 7757 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 31134548538 in words is "thirty-one billion, one hundred thirty-four million, five hundred forty-eight thousand, five hundred thirty-eight".