23115431222151 has 16 divisors (see below), whose sum is σ = 31538424111744. Its totient is φ = 15051387716064.

The previous prime is 23115431222131. The next prime is 23115431222159. The reversal of 23115431222151 is 15122213451132.

It is not a de Polignac number, because 23115431222151 - 2¹⁷ = 23115431091079 is a prime.

It is a super-3 number, since 3×23115431222151³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115431222159) 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, 657885 + ... + 6831081.

It is an arithmetic number, because the mean of its divisors is an integer number (1971151506984).

Almost surely, 2^{23115431222151} is an apocalyptic number.

23115431222151 is a deficient number, since it is larger than the sum of its proper divisors (8422992889593).

23115431222151 is a wasteful number, since it uses less digits than its factorization.

23115431222151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202270.

The product of its digits is 14400, while the sum is 33.

Adding to 23115431222151 its reverse (15122213451132), we get a palindrome (38237644673283).

The spelling of 23115431222151 in words is "twenty-three trillion, one hundred fifteen billion, four hundred thirty-one million, two hundred twenty-two thousand, one hundred fifty-one".