2131120031 has 8 divisors (see below), whose sum is σ = 2148314400. Its totient is φ = 2113964512.

The previous prime is 2131120021. The next prime is 2131120081. The reversal of 2131120031 is 1300211312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131120031 - 2⁶ = 2131119967 is a prime.

It is a super-2 number, since 2×2131120031² = 9083345173058881922, 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 = 2131119988 and 2131120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131120001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105926 + ... + 124428.

It is an arithmetic number, because the mean of its divisors is an integer number (268539300).

Almost surely, 2^2131120031 is an apocalyptic number.

2131120031 is a deficient number, since it is larger than the sum of its proper divisors (17194369).

2131120031 is a wasteful number, since it uses less digits than its factorization.

2131120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19425.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2131120031 is about 46164.0556168974. The cubic root of 2131120031 is about 1286.8738337780.

Adding to 2131120031 its reverse (1300211312), we get a palindrome (3431331343).

The spelling of 2131120031 in words is "two billion, one hundred thirty-one million, one hundred twenty thousand, thirty-one".