1331211372 has 48 divisors (see below), whose sum is σ = 3182403840. Its totient is φ = 432871488.

The previous prime is 1331211317. The next prime is 1331211373. The reversal of 1331211372 is 2731121331.

1331211372 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1331211373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707529 + ... + 709407.

It is an arithmetic number, because the mean of its divisors is an integer number (66300080).

Almost surely, 2^1331211372 is an apocalyptic number.

1331211372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331211372 is an abundant number, since it is smaller than the sum of its proper divisors (1851192468).

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

1331211372 is a wasteful number, since it uses less digits than its factorization.

1331211372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302 (or 3300 counting only the distinct ones).

The product of its digits is 756, while the sum is 24.

The square root of 1331211372 is about 36485.7694450864. The cubic root of 1331211372 is about 1100.0582261190.

The spelling of 1331211372 in words is "one billion, three hundred thirty-one million, two hundred eleven thousand, three hundred seventy-two".