531321154492 has 6 divisors (see below), whose sum is σ = 929812020368. Its totient is φ = 265660577244.

The previous prime is 531321154477. The next prime is 531321154493. The reversal of 531321154492 is 294451123135.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531321154493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66415144308 + ... + 66415144315.

Almost surely, 2^531321154492 is an apocalyptic number.

It is an amenable number.

531321154492 is a deficient number, since it is larger than the sum of its proper divisors (398490865876).

531321154492 is a wasteful number, since it uses less digits than its factorization.

531321154492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132830288627 (or 132830288625 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The spelling of 531321154492 in words is "five hundred thirty-one billion, three hundred twenty-one million, one hundred fifty-four thousand, four hundred ninety-two".