531431142 has 32 divisors (see below), whose sum is σ = 1165584384. Its totient is φ = 160192800.

The previous prime is 531431107. The next prime is 531431149. The reversal of 531431142 is 241134135.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531431149) 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, 8473 + ... + 33684.

It is an arithmetic number, because the mean of its divisors is an integer number (36424512).

Almost surely, 2^531431142 is an apocalyptic number.

531431142 is an abundant number, since it is smaller than the sum of its proper divisors (634153242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531431142 is a wasteful number, since it uses less digits than its factorization.

531431142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42364.

The product of its digits is 1440, while the sum is 24.

The square root of 531431142 is about 23052.7903300230. The cubic root of 531431142 is about 809.9949915862.

Adding to 531431142 its reverse (241134135), we get a palindrome (772565277).

It can be divided in two parts, 53143 and 1142, that added together give a triangular number (54285 = T₃₂₉).

The spelling of 531431142 in words is "five hundred thirty-one million, four hundred thirty-one thousand, one hundred forty-two".