2151402431 has 2 divisors, whose sum is σ = 2151402432. Its totient is φ = 2151402430.

The previous prime is 2151402401. The next prime is 2151402457. The reversal of 2151402431 is 1342041512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2151402431 - 2²² = 2147208127 is a prime.

It is a super-2 number, since 2×2151402431² = 9257064840225419522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2151402397 and 2151402406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151402401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075701215 + 1075701216.

It is an arithmetic number, because the mean of its divisors is an integer number (1075701216).

Almost surely, 2^2151402431 is an apocalyptic number.

2151402431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151402431 is an equidigital number, since it uses as much as digits as its factorization.

2151402431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2151402431 is about 46383.2128145518. The cubic root of 2151402431 is about 1290.9434500093.

Adding to 2151402431 its reverse (1342041512), we get a palindrome (3493443943).

The spelling of 2151402431 in words is "two billion, one hundred fifty-one million, four hundred two thousand, four hundred thirty-one".