120031100031 has 16 divisors (see below), whose sum is σ = 169465928544. Its totient is φ = 75309072384.

The previous prime is 120031100003. The next prime is 120031100047. The reversal of 120031100031 is 130001130021.

It is not a de Polignac number, because 120031100031 - 2⁹ = 120031099519 is a prime.

It is a super-2 number, since 2×120031100031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120031100131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911025 + ... + 1034421.

It is an arithmetic number, because the mean of its divisors is an integer number (10591620534).

Almost surely, 2^120031100031 is an apocalyptic number.

120031100031 is a deficient number, since it is larger than the sum of its proper divisors (49434828513).

120031100031 is a wasteful number, since it uses less digits than its factorization.

120031100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142490.

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

Adding to 120031100031 its reverse (130001130021), we get a palindrome (250032230052).

The spelling of 120031100031 in words is "one hundred twenty billion, thirty-one million, one hundred thousand, thirty-one".