120113031 has 4 divisors (see below), whose sum is σ = 160150712. Its totient is φ = 80075352.

The previous prime is 120113029. The next prime is 120113033. The reversal of 120113031 is 130311021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130311021 = 3 ⋅43437007.

It is an interprime number because it is at equal distance from previous prime (120113029) and next prime (120113033).

It is not a de Polignac number, because 120113031 - 2¹ = 120113029 is a prime.

It is a super-2 number, since 2×120113031² = 28854280432013922, 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 = 120112998 and 120113016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120113033) 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, 20018836 + ... + 20018841.

It is an arithmetic number, because the mean of its divisors is an integer number (40037678).

Almost surely, 2^120113031 is an apocalyptic number.

120113031 is a deficient number, since it is larger than the sum of its proper divisors (40037681).

120113031 is an equidigital number, since it uses as much as digits as its factorization.

120113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40037680.

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

The square root of 120113031 is about 10959.6090714952. The cubic root of 120113031 is about 493.3972320547.

Adding to 120113031 its reverse (130311021), we get a palindrome (250424052).

The spelling of 120113031 in words is "one hundred twenty million, one hundred thirteen thousand, thirty-one".