151340643 has 24 divisors (see below), whose sum is σ = 238638400. Its totient is φ = 95580648.

The previous prime is 151340639. The next prime is 151340663. The reversal of 151340643 is 346043151.

151340643 is a `hidden beast` number, since 1 + 5 + 13 + 4 + 0 + 643 = 666.

It is not a de Polignac number, because 151340643 - 2² = 151340639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151340663) 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 in 23 ways as a sum of consecutive naturals, for example, 11773 + ... + 21006.

Almost surely, 2^151340643 is an apocalyptic number.

151340643 is a deficient number, since it is larger than the sum of its proper divisors (87297757).

151340643 is an equidigital number, since it uses as much as digits as its factorization.

151340643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32813 (or 32801 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 151340643 is about 12302.0584862859. The cubic root of 151340643 is about 532.9075317110.

Adding to 151340643 its reverse (346043151), we get a palindrome (497383794).

The spelling of 151340643 in words is "one hundred fifty-one million, three hundred forty thousand, six hundred forty-three".