120199931 has 2 divisors, whose sum is σ = 120199932. Its totient is φ = 120199930.

The previous prime is 120199913. The next prime is 120199957. The reversal of 120199931 is 139991021.

Together with previous prime (120199913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120199931 - 2¹⁰ = 120198907 is a prime.

It is a super-2 number, since 2×120199931² = 28896046824809522, which contains 22 as substring.

It is equal to p_6852464 and since 120199931 and 6852464 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 120199891 and 120199900.

It is not a weakly prime, because it can be changed into another prime (120199901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60099965 + 60099966.

It is an arithmetic number, because the mean of its divisors is an integer number (60099966).

Almost surely, 2^120199931 is an apocalyptic number.

120199931 is a deficient number, since it is larger than the sum of its proper divisors (1).

120199931 is an equidigital number, since it uses as much as digits as its factorization.

120199931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 120199931 is about 10963.5729121487. The cubic root of 120199931 is about 493.5161919021.

The spelling of 120199931 in words is "one hundred twenty million, one hundred ninety-nine thousand, nine hundred thirty-one".