2120312451 has 16 divisors (see below), whose sum is σ = 2863317024. Its totient is φ = 1395523584.

The previous prime is 2120312423. The next prime is 2120312461. The reversal of 2120312451 is 1542130212.

It is not a de Polignac number, because 2120312451 - 2⁵ = 2120312419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120312461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74955 + ... + 99291.

It is an arithmetic number, because the mean of its divisors is an integer number (178957314).

Almost surely, 2^2120312451 is an apocalyptic number.

2120312451 is a deficient number, since it is larger than the sum of its proper divisors (743004573).

2120312451 is a wasteful number, since it uses less digits than its factorization.

2120312451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24710.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2120312451 is about 46046.8506089179. The cubic root of 2120312451 is about 1284.6947653742.

Adding to 2120312451 its reverse (1542130212), we get a palindrome (3662442663).

The spelling of 2120312451 in words is "two billion, one hundred twenty million, three hundred twelve thousand, four hundred fifty-one".