1531113204232 has 16 divisors (see below), whose sum is σ = 2870890232400. Its totient is φ = 765542475600.

The previous prime is 1531113204227. The next prime is 1531113204233. The reversal of 1531113204232 is 2324023111351.

It is a self number, because there is not a number n which added to its sum of digits gives 1531113204232.

It is not an unprimeable number, because it can be changed into a prime (1531113204233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297882 + ... + 2178697.

It is an arithmetic number, because the mean of its divisors is an integer number (179430639525).

Almost surely, 2^{1531113204232} is an apocalyptic number.

It is an amenable number.

1531113204232 is a deficient number, since it is larger than the sum of its proper divisors (1339777028168).

1531113204232 is a wasteful number, since it uses less digits than its factorization.

1531113204232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531636 (or 3531632 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1531113204232 its reverse (2324023111351), we get a palindrome (3855136315583).

The spelling of 1531113204232 in words is "one trillion, five hundred thirty-one billion, one hundred thirteen million, two hundred four thousand, two hundred thirty-two".