144996531 has 16 divisors (see below), whose sum is σ = 202777344. Its totient is φ = 91983584.

The previous prime is 144996529. The next prime is 144996583. The reversal of 144996531 is 135699441.

It is a cyclic number.

It is not a de Polignac number, because 144996531 - 2¹ = 144996529 is a prime.

It is a super-2 number, since 2×144996531² = 42047988004067922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144996431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8260 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (12673584).

Almost surely, 2^144996531 is an apocalyptic number.

144996531 is a deficient number, since it is larger than the sum of its proper divisors (57780813).

144996531 is a wasteful number, since it uses less digits than its factorization.

144996531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890.

The product of its digits is 116640, while the sum is 42.

The square root of 144996531 is about 12041.4505355460. The cubic root of 144996531 is about 525.3545976305.

The spelling of 144996531 in words is "one hundred forty-four million, nine hundred ninety-six thousand, five hundred thirty-one".