2151232311 has 8 divisors (see below), whose sum is σ = 2878518384. Its totient is φ = 1429050560.

The previous prime is 2151232289. The next prime is 2151232313. The reversal of 2151232311 is 1132321512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151232311 - 2²¹ = 2149135159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151232313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275096 + ... + 1276781.

It is an arithmetic number, because the mean of its divisors is an integer number (359814798).

Almost surely, 2^2151232311 is an apocalyptic number.

2151232311 is a deficient number, since it is larger than the sum of its proper divisors (727286073).

2151232311 is a wasteful number, since it uses less digits than its factorization.

2151232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552161.

The product of its digits is 360, while the sum is 21.

The square root of 2151232311 is about 46381.3789251678. The cubic root of 2151232311 is about 1290.9094224241.

Adding to 2151232311 its reverse (1132321512), we get a palindrome (3283553823).

The spelling of 2151232311 in words is "two billion, one hundred fifty-one million, two hundred thirty-two thousand, three hundred eleven".