2151354331 has 4 divisors (see below), whose sum is σ = 2458690672. Its totient is φ = 1844017992.

The previous prime is 2151354319. The next prime is 2151354349. The reversal of 2151354331 is 1334531512.

It is a happy number.

2151354331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151354331 is a prime.

It is a super-2 number, since 2×2151354331² = 9256650915024915122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151354331.

It is not an unprimeable number, because it can be changed into a prime (2151354391) 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, 153668160 + ... + 153668173.

It is an arithmetic number, because the mean of its divisors is an integer number (614672668).

Almost surely, 2^2151354331 is an apocalyptic number.

2151354331 is a deficient number, since it is larger than the sum of its proper divisors (307336341).

2151354331 is an equidigital number, since it uses as much as digits as its factorization.

2151354331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307336340.

The product of its digits is 5400, while the sum is 28.

The square root of 2151354331 is about 46382.6943050962. The cubic root of 2151354331 is about 1290.9338291775.

Adding to 2151354331 its reverse (1334531512), we get a palindrome (3485885843).

The spelling of 2151354331 in words is "two billion, one hundred fifty-one million, three hundred fifty-four thousand, three hundred thirty-one".