151644131 has 4 divisors (see below), whose sum is σ = 160564392. Its totient is φ = 142723872.

The previous prime is 151644121. The next prime is 151644133. The reversal of 151644131 is 131446151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131446151 = 1033 ⋅127247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151644131 is a prime.

It is a super-2 number, since 2×151644131² = 45991884933490322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151644131.

It is not an unprimeable number, because it can be changed into a prime (151644133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4460105 + ... + 4460138.

It is an arithmetic number, because the mean of its divisors is an integer number (40141098).

Almost surely, 2^151644131 is an apocalyptic number.

151644131 is a deficient number, since it is larger than the sum of its proper divisors (8920261).

151644131 is an equidigital number, since it uses as much as digits as its factorization.

151644131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8920260.

The product of its digits is 1440, while the sum is 26.

The square root of 151644131 is about 12314.3871548689. The cubic root of 151644131 is about 533.2635124310.

The spelling of 151644131 in words is "one hundred fifty-one million, six hundred forty-four thousand, one hundred thirty-one".