1397453131215 has 48 divisors (see below), whose sum is σ = 2553589149696. Its totient is φ = 705920011200.

The previous prime is 1397453131163. The next prime is 1397453131253. The reversal of 1397453131215 is 5121313547931.

1397453131215 is a `hidden beast` number, since 1 + 3 + 9 + 74 + 531 + 31 + 2 + 15 = 666.

It is not a de Polignac number, because 1397453131215 - 2¹⁴ = 1397453114831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10591441 + ... + 10722570.

It is an arithmetic number, because the mean of its divisors is an integer number (53199773952).

Almost surely, 2^{1397453131215} is an apocalyptic number.

1397453131215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1397453131215 is a deficient number, since it is larger than the sum of its proper divisors (1156136018481).

1397453131215 is a wasteful number, since it uses less digits than its factorization.

1397453131215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21314100 (or 21314097 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The spelling of 1397453131215 in words is "one trillion, three hundred ninety-seven billion, four hundred fifty-three million, one hundred thirty-one thousand, two hundred fifteen".