120971631 has 8 divisors (see below), whose sum is σ = 175958784. Its totient is φ = 73316120.

The previous prime is 120971623. The next prime is 120971633. The reversal of 120971631 is 136179021.

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 120971631 - 2³ = 120971623 is a prime.

It is a super-2 number, since 2×120971631² = 29268271013600322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120971633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1832871 + ... + 1832936.

It is an arithmetic number, because the mean of its divisors is an integer number (21994848).

Almost surely, 2^120971631 is an apocalyptic number.

120971631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120971631 is a deficient number, since it is larger than the sum of its proper divisors (54987153).

120971631 is a wasteful number, since it uses less digits than its factorization.

120971631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665821.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 120971631 is about 10998.7104244089. The cubic root of 120971631 is about 494.5700868808.

The spelling of 120971631 in words is "one hundred twenty million, nine hundred seventy-one thousand, six hundred thirty-one".