120431631 has 8 divisors (see below), whose sum is σ = 161748144. Its totient is φ = 79701440.

The previous prime is 120431627. The next prime is 120431651. The reversal of 120431631 is 136134021.

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 120431631 - 2² = 120431627 is a prime.

It is a super-2 number, since 2×120431631² = 29007555490640322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120431598 and 120431607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120431651) 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, 146100 + ... + 146921.

It is an arithmetic number, because the mean of its divisors is an integer number (20218518).

Almost surely, 2^120431631 is an apocalyptic number.

120431631 is a deficient number, since it is larger than the sum of its proper divisors (41316513).

120431631 is a wasteful number, since it uses less digits than its factorization.

120431631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293161.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 120431631 is about 10974.1346355874. The cubic root of 120431631 is about 493.8330925478.

Adding to 120431631 its reverse (136134021), we get a palindrome (256565652).

The spelling of 120431631 in words is "one hundred twenty million, four hundred thirty-one thousand, six hundred thirty-one".