151323681 has 8 divisors (see below), whose sum is σ = 213633504. Its totient is φ = 94948160.

The previous prime is 151323643. The next prime is 151323713. The reversal of 151323681 is 186323151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151323681 - 2¹⁷ = 151192609 is a prime.

It is a super-2 number, since 2×151323681² = 45797712862779522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151323281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483515 + ... + 1483616.

It is an arithmetic number, because the mean of its divisors is an integer number (26704188).

Almost surely, 2^151323681 is an apocalyptic number.

It is an amenable number.

151323681 is a deficient number, since it is larger than the sum of its proper divisors (62309823).

151323681 is a wasteful number, since it uses less digits than its factorization.

151323681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967151.

The product of its digits is 4320, while the sum is 30.

The square root of 151323681 is about 12301.3690701482. The cubic root of 151323681 is about 532.8876218461.

The spelling of 151323681 in words is "one hundred fifty-one million, three hundred twenty-three thousand, six hundred eighty-one".