233145525231 has 32 divisors (see below), whose sum is σ = 347342750400. Its totient is φ = 154558886400.

The previous prime is 233145525209. The next prime is 233145525247. The reversal of 233145525231 is 132525541332.

233145525231 is a `hidden beast` number, since 2 + 331 + 45 + 5 + 252 + 31 = 666.

It is not a de Polignac number, because 233145525231 - 2¹⁰ = 233145524207 is a prime.

It is a super-2 number, since 2×233145525231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233145525031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3467331 + ... + 3533931.

It is an arithmetic number, because the mean of its divisors is an integer number (10854460950).

Almost surely, 2^233145525231 is an apocalyptic number.

233145525231 is a deficient number, since it is larger than the sum of its proper divisors (114197225169).

233145525231 is a wasteful number, since it uses less digits than its factorization.

233145525231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67336 (or 67330 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The spelling of 233145525231 in words is "two hundred thirty-three billion, one hundred forty-five million, five hundred twenty-five thousand, two hundred thirty-one".