151532231 has 2 divisors, whose sum is σ = 151532232. Its totient is φ = 151532230.

The previous prime is 151532197. The next prime is 151532243. The reversal of 151532231 is 132235151.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151532231 - 2¹⁰ = 151531207 is a prime.

It is a super-2 number, since 2×151532231² = 45924034063674722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 151532197 and 151532206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151532281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75766115 + 75766116.

It is an arithmetic number, because the mean of its divisors is an integer number (75766116).

Almost surely, 2^151532231 is an apocalyptic number.

151532231 is a deficient number, since it is larger than the sum of its proper divisors (1).

151532231 is an equidigital number, since it uses as much as digits as its factorization.

151532231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 151532231 is about 12309.8428503373. The cubic root of 151532231 is about 533.1323130010.

Adding to 151532231 its reverse (132235151), we get a palindrome (283767382).

The spelling of 151532231 in words is "one hundred fifty-one million, five hundred thirty-two thousand, two hundred thirty-one".