130100031 has 24 divisors (see below), whose sum is σ = 200023200. Its totient is φ = 81202176.

The previous prime is 130100027. The next prime is 130100041. The reversal of 130100031 is 130001031.

It is not a de Polignac number, because 130100031 - 2² = 130100027 is a prime.

It is a super-2 number, since 2×130100031² = 33852036132401922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 130099986 and 130100022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130100041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28311 + ... + 32583.

It is an arithmetic number, because the mean of its divisors is an integer number (8334300).

Almost surely, 2^130100031 is an apocalyptic number.

130100031 is a deficient number, since it is larger than the sum of its proper divisors (69923169).

130100031 is a wasteful number, since it uses less digits than its factorization.

130100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495 (or 4492 counting only the distinct ones).

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

The square root of 130100031 is about 11406.1400570044. The cubic root of 130100031 is about 506.7096010958.

Adding to 130100031 its reverse (130001031), we get a palindrome (260101062).

It can be divided in two parts, 1301000 and 31, that added together give a palindrome (1301031).

The spelling of 130100031 in words is "one hundred thirty million, one hundred thousand, thirty-one".