131018764 has 24 divisors (see below), whose sum is σ = 244823040. Its totient is φ = 61202064.

The previous prime is 131018753. The next prime is 131018777. The reversal of 131018764 is 467810131.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12604 + ... + 20515.

It is an arithmetic number, because the mean of its divisors is an integer number (10200960).

Almost surely, 2^131018764 is an apocalyptic number.

It is an amenable number.

131018764 is a deficient number, since it is larger than the sum of its proper divisors (113804276).

131018764 is a wasteful number, since it uses less digits than its factorization.

131018764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33189 (or 33187 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 131018764 is about 11446.3428220546. The cubic root of 131018764 is about 507.8995554400.

Adding to 131018764 its reverse (467810131), we get a palindrome (598828895).

The spelling of 131018764 in words is "one hundred thirty-one million, eighteen thousand, seven hundred sixty-four".