151518231 has 12 divisors (see below), whose sum is σ = 219009960. Its totient is φ = 100942800.

The previous prime is 151518221. The next prime is 151518259. The reversal of 151518231 is 132815151.

It is not a de Polignac number, because 151518231 - 2¹⁸ = 151256087 is a prime.

It is a super-2 number, since 2×151518231² = 45915548650738722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151518195 and 151518204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151518221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10456 + ... + 20306.

It is an arithmetic number, because the mean of its divisors is an integer number (18250830).

Almost surely, 2^151518231 is an apocalyptic number.

151518231 is a deficient number, since it is larger than the sum of its proper divisors (67491729).

151518231 is a wasteful number, since it uses less digits than its factorization.

151518231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11566 (or 11563 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 151518231 is about 12309.2741865636. The cubic root of 151518231 is about 533.1158938709.

The spelling of 151518231 in words is "one hundred fifty-one million, five hundred eighteen thousand, two hundred thirty-one".