531405400134 has 48 divisors (see below), whose sum is σ = 1237337737200. Its totient is φ = 151706471616.

The previous prime is 531405400133. The next prime is 531405400159. The reversal of 531405400134 is 431004504135.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531405400133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374029 + ... + 1096680.

It is an arithmetic number, because the mean of its divisors is an integer number (25777869525).

Almost surely, 2^531405400134 is an apocalyptic number.

531405400134 is an abundant number, since it is smaller than the sum of its proper divisors (705932337066).

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

531405400134 is a wasteful number, since it uses less digits than its factorization.

531405400134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471957 (or 1471950 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 531405400134 its reverse (431004504135), we get a palindrome (962409904269).

The spelling of 531405400134 in words is "five hundred thirty-one billion, four hundred five million, four hundred thousand, one hundred thirty-four".