23151315031211 has 4 divisors (see below), whose sum is σ = 23165939994912. Its totient is φ = 23136690067512.

The previous prime is 23151315031081. The next prime is 23151315031213. The reversal of 23151315031211 is 11213051315132.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23151315031211 - 2²⁶ = 23151247922347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23151315031213) 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, 7312479476 + ... + 7312482641.

It is an arithmetic number, because the mean of its divisors is an integer number (5791484998728).

Almost surely, 2^{23151315031211} is an apocalyptic number.

23151315031211 is a deficient number, since it is larger than the sum of its proper divisors (14624963701).

23151315031211 is a wasteful number, since it uses less digits than its factorization.

23151315031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14624963700.

The product of its (nonzero) digits is 2700, while the sum is 29.

Adding to 23151315031211 its reverse (11213051315132), we get a palindrome (34364366346343).

The spelling of 23151315031211 in words is "twenty-three trillion, one hundred fifty-one billion, three hundred fifteen million, thirty-one thousand, two hundred eleven".