130121031 has 4 divisors (see below), whose sum is σ = 173494712. Its totient is φ = 86747352.

The previous prime is 130121023. The next prime is 130121059.

130121031 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 130121031 - 2³ = 130121023 is a prime.

It is a super-2 number, since 2×130121031² = 33862965417005922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130120998 and 130121016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121011) 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, 21686836 + ... + 21686841.

It is an arithmetic number, because the mean of its divisors is an integer number (43373678).

Almost surely, 2^130121031 is an apocalyptic number.

130121031 is a deficient number, since it is larger than the sum of its proper divisors (43373681).

130121031 is an equidigital number, since it uses as much as digits as its factorization.

130121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43373680.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 130121031 is about 11407.0605766779. The cubic root of 130121031 is about 506.7368630139.

The spelling of 130121031 in words is "one hundred thirty million, one hundred twenty-one thousand, thirty-one".