131031000101 has 4 divisors (see below), whose sum is σ = 131032166604. Its totient is φ = 131029833600.

The previous prime is 131031000073. The next prime is 131031000157. The reversal of 131031000101 is 101000130131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53817040225 + 77213959876 = 231985^2 + 277874^2 .

It is a cyclic number.

It is not a de Polignac number, because 131031000101 - 2²² = 131026805797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031000301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394370 + ... + 646211.

It is an arithmetic number, because the mean of its divisors is an integer number (32758041651).

Almost surely, 2^131031000101 is an apocalyptic number.

It is an amenable number.

131031000101 is a deficient number, since it is larger than the sum of its proper divisors (1166503).

131031000101 is a wasteful number, since it uses less digits than its factorization.

131031000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166502.

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 131031000101 its reverse (101000130131), we get a palindrome (232031130232).

The spelling of 131031000101 in words is "one hundred thirty-one billion, thirty-one million, one hundred one", and thus it is an aban number.