131511233223 has 6 divisors (see below), whose sum is σ = 189960670224. Its totient is φ = 87674155476.

The previous prime is 131511233201. The next prime is 131511233237. The reversal of 131511233223 is 322332115131.

131511233223 is a `hidden beast` number, since 1 + 315 + 1 + 1 + 23 + 322 + 3 = 666.

It is not a de Polignac number, because 131511233223 - 2⁶ = 131511233159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131511233023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7306179615 + ... + 7306179632.

It is an arithmetic number, because the mean of its divisors is an integer number (31660111704).

Almost surely, 2^131511233223 is an apocalyptic number.

131511233223 is a deficient number, since it is larger than the sum of its proper divisors (58449437001).

131511233223 is a wasteful number, since it uses less digits than its factorization.

131511233223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14612359253 (or 14612359250 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

Adding to 131511233223 its reverse (322332115131), we get a palindrome (453843348354).

The spelling of 131511233223 in words is "one hundred thirty-one billion, five hundred eleven million, two hundred thirty-three thousand, two hundred twenty-three".