1331396055 has 128 divisors (see below), whose sum is σ = 2854103040. Its totient is φ = 580884480.

The previous prime is 1331396051. The next prime is 1331396107. The reversal of 1331396055 is 5506931331.

1331396055 is a `hidden beast` number, since 1 + 33 + 13 + 9 + 605 + 5 = 666.

It is not a de Polignac number, because 1331396055 - 2² = 1331396051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331396051) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 579489 + ... + 581781.

It is an arithmetic number, because the mean of its divisors is an integer number (22297680).

Almost surely, 2^1331396055 is an apocalyptic number.

1331396055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1331396055 is an abundant number, since it is smaller than the sum of its proper divisors (1522706985).

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

1331396055 is a wasteful number, since it uses less digits than its factorization.

1331396055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 2352 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 36.

The square root of 1331396055 is about 36488.3002481617. The cubic root of 1331396055 is about 1100.1090952405.

It can be divided in two parts, 1331 and 396055, that added together give a triangular number (397386 = T₈₉₁).

The spelling of 1331396055 in words is "one billion, three hundred thirty-one million, three hundred ninety-six thousand, fifty-five".