1331455247397 has 32 divisors (see below), whose sum is σ = 2197630863360. Its totient is φ = 789773574960.

The previous prime is 1331455247387. The next prime is 1331455247497. The reversal of 1331455247397 is 7937425541331.

1331455247397 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 4 + 5 + 5 + 247 + 397 = 666.

It is not a de Polignac number, because 1331455247397 - 2¹⁴ = 1331455231013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331455247357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47677683 + ... + 47705600.

It is an arithmetic number, because the mean of its divisors is an integer number (68675964480).

Almost surely, 2^{1331455247397} is an apocalyptic number.

It is an amenable number.

1331455247397 is a deficient number, since it is larger than the sum of its proper divisors (866175615963).

1331455247397 is a wasteful number, since it uses less digits than its factorization.

1331455247397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95383350 (or 95383344 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The spelling of 1331455247397 in words is "one trillion, three hundred thirty-one billion, four hundred fifty-five million, two hundred forty-seven thousand, three hundred ninety-seven".