131031464 has 8 divisors (see below), whose sum is σ = 245684010. Its totient is φ = 65515728.

The previous prime is 131031443. The next prime is 131031469. The reversal of 131031464 is 464130131.

It can be written as a sum of positive squares in only one way, i.e., 109035364 + 21996100 = 10442^2 + 4690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (131031469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189459 + ... + 8189474.

Almost surely, 2^131031464 is an apocalyptic number.

It is an amenable number.

131031464 is a deficient number, since it is larger than the sum of its proper divisors (114652546).

131031464 is a wasteful number, since it uses less digits than its factorization.

131031464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16378939 (or 16378935 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 131031464 is about 11446.8975709578. The cubic root of 131031464 is about 507.9159655982.

Adding to 131031464 its reverse (464130131), we get a palindrome (595161595).

The spelling of 131031464 in words is "one hundred thirty-one million, thirty-one thousand, four hundred sixty-four".