144211431 has 16 divisors (see below), whose sum is σ = 236655104. Its totient is φ = 76067424.

The previous prime is 144211429. The next prime is 144211439. The reversal of 144211431 is 134112441.

It is not a de Polignac number, because 144211431 - 2¹ = 144211429 is a prime.

It is a super-2 number, since 2×144211431² = 41593873662135522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 144211398 and 144211407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144211439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263851 + ... + 264396.

It is an arithmetic number, because the mean of its divisors is an integer number (14790944).

Almost surely, 2^144211431 is an apocalyptic number.

144211431 is a deficient number, since it is larger than the sum of its proper divisors (92443673).

144211431 is a wasteful number, since it uses less digits than its factorization.

144211431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528270.

The product of its digits is 384, while the sum is 21.

The square root of 144211431 is about 12008.8063936430. The cubic root of 144211431 is about 524.4046839354.

Adding to 144211431 its reverse (134112441), we get a palindrome (278323872).

It can be divided in two parts, 144 and 211431, that added together give a triangular number (211575 = T₆₅₀).

The spelling of 144211431 in words is "one hundred forty-four million, two hundred eleven thousand, four hundred thirty-one".