151503321231 has 6 divisors (see below), whose sum is σ = 218838130680. Its totient is φ = 101002214148.

The previous prime is 151503321227. The next prime is 151503321251. The reversal of 151503321231 is 132123305151.

151503321231 is a `hidden beast` number, since 1 + 5 + 1 + 503 + 32 + 123 + 1 = 666.

It is not a de Polignac number, because 151503321231 - 2² = 151503321227 is a prime.

It is a super-2 number, since 2×151503321231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151503321195 and 151503321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151503321251) 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, 8416851171 + ... + 8416851188.

It is an arithmetic number, because the mean of its divisors is an integer number (36473021780).

Almost surely, 2^151503321231 is an apocalyptic number.

151503321231 is a deficient number, since it is larger than the sum of its proper divisors (67334809449).

151503321231 is a wasteful number, since it uses less digits than its factorization.

151503321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16833702365 (or 16833702362 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 151503321231 its reverse (132123305151), we get a palindrome (283626626382).

The spelling of 151503321231 in words is "one hundred fifty-one billion, five hundred three million, three hundred twenty-one thousand, two hundred thirty-one".