1331400156 has 24 divisors (see below), whose sum is σ = 3190563600. Its totient is φ = 431805312.

The previous prime is 1331400127. The next prime is 1331400181. The reversal of 1331400156 is 6510041331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498881 + ... + 1499768.

It is an arithmetic number, because the mean of its divisors is an integer number (132940150).

Almost surely, 2^1331400156 is an apocalyptic number.

It is an amenable number.

1331400156 is an abundant number, since it is smaller than the sum of its proper divisors (1859163444).

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

1331400156 is a wasteful number, since it uses less digits than its factorization.

1331400156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998693 (or 2998691 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1331400156 is about 36488.3564442138. The cubic root of 1331400156 is about 1100.1102247673.

Adding to 1331400156 its reverse (6510041331), we get a palindrome (7841441487).

The spelling of 1331400156 in words is "one billion, three hundred thirty-one million, four hundred thousand, one hundred fifty-six".