120211431 has 4 divisors (see below), whose sum is σ = 160281912. Its totient is φ = 80140952.

The previous prime is 120211391. The next prime is 120211433. The reversal of 120211431 is 134112021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134112021 = 3 ⋅44704007.

It is a cyclic number.

It is not a de Polignac number, because 120211431 - 2⁹ = 120210919 is a prime.

It is a super-2 number, since 2×120211431² = 28901576286135522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120211431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20035236 + ... + 20035241.

It is an arithmetic number, because the mean of its divisors is an integer number (40070478).

Almost surely, 2^120211431 is an apocalyptic number.

120211431 is a deficient number, since it is larger than the sum of its proper divisors (40070481).

120211431 is an equidigital number, since it uses as much as digits as its factorization.

120211431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40070480.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 120211431 is about 10964.0973636684. The cubic root of 120211431 is about 493.5319302784.

Adding to 120211431 its reverse (134112021), we get a palindrome (254323452).

The spelling of 120211431 in words is "one hundred twenty million, two hundred eleven thousand, four hundred thirty-one".