144202431 has 32 divisors (see below), whose sum is σ = 203777280. Its totient is φ = 90602496.

The previous prime is 144202427. The next prime is 144202441. The reversal of 144202431 is 134202441.

It is not a de Polignac number, because 144202431 - 2² = 144202427 is a prime.

It is a super-2 number, since 2×144202431² = 41588682212619522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144202398 and 144202407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144202411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 635140 + ... + 635366.

It is an arithmetic number, because the mean of its divisors is an integer number (6368040).

Almost surely, 2^144202431 is an apocalyptic number.

144202431 is a deficient number, since it is larger than the sum of its proper divisors (59574849).

144202431 is a wasteful number, since it uses less digits than its factorization.

144202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144202431 is about 12008.4316627943. The cubic root of 144202431 is about 524.3937746283.

Adding to 144202431 its reverse (134202441), we get a palindrome (278404872).

The spelling of 144202431 in words is "one hundred forty-four million, two hundred two thousand, four hundred thirty-one".