531305325051240 has 64 divisors (see below), whose sum is σ = 1603694600827200. Its totient is φ = 140812208842752.

The previous prime is 531305325051211. The next prime is 531305325051301. The reversal of 531305325051240 is 42150523503135.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13581404905 + ... + 13581444024.

It is an arithmetic number, because the mean of its divisors is an integer number (25057728137925).

Almost surely, 2^{531305325051240} is an apocalyptic number.

It is an amenable number.

531305325051240 is an abundant number, since it is smaller than the sum of its proper divisors (1072389275775960).

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

531305325051240 is a wasteful number, since it uses less digits than its factorization.

531305325051240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27162849106 (or 27162849102 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 39.

Adding to 531305325051240 its reverse (42150523503135), we get a palindrome (573455848554375).

The spelling of 531305325051240 in words is "five hundred thirty-one trillion, three hundred five billion, three hundred twenty-five million, fifty-one thousand, two hundred forty".