120812431 has 4 divisors (see below), whose sum is σ = 127171000. Its totient is φ = 114453864.

The previous prime is 120812429. The next prime is 120812453. The reversal of 120812431 is 134218021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134218021 = 7 ⋅19174003.

It is a cyclic number.

It is not a de Polignac number, because 120812431 - 2¹ = 120812429 is a prime.

It is a super-2 number, since 2×120812431² = 29191286968259522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120812401) 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 3 ways as a sum of consecutive naturals, for example, 3179256 + ... + 3179293.

It is an arithmetic number, because the mean of its divisors is an integer number (31792750).

Almost surely, 2^120812431 is an apocalyptic number.

120812431 is a deficient number, since it is larger than the sum of its proper divisors (6358569).

120812431 is an equidigital number, since it uses as much as digits as its factorization.

120812431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358568.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 120812431 is about 10991.4708296934. The cubic root of 120812431 is about 494.3530384114.

The spelling of 120812431 in words is "one hundred twenty million, eight hundred twelve thousand, four hundred thirty-one".