531400255131 has 8 divisors (see below), whose sum is σ = 709079965264. Its totient is φ = 353993690880.

The previous prime is 531400255121. The next prime is 531400255147. The reversal of 531400255131 is 131552004135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531400255131 - 2⁷ = 531400255003 is a prime.

It is a super-2 number, since 2×531400255131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531400255121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68281930 + ... + 68289711.

It is an arithmetic number, because the mean of its divisors is an integer number (88634995658).

Almost surely, 2^531400255131 is an apocalyptic number.

531400255131 is a deficient number, since it is larger than the sum of its proper divisors (177679710133).

531400255131 is a wasteful number, since it uses less digits than its factorization.

531400255131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136572941.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 531400255131 its reverse (131552004135), we get a palindrome (662952259266).

The spelling of 531400255131 in words is "five hundred thirty-one billion, four hundred million, two hundred fifty-five thousand, one hundred thirty-one".