1355365513431 has 24 divisors (see below), whose sum is σ = 2128936618224. Its totient is φ = 827440945920.

The previous prime is 1355365513279. The next prime is 1355365513459. The reversal of 1355365513431 is 1343155635531.

1355365513431 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 36 + 551 + 34 + 31 = 666.

It is not a de Polignac number, because 1355365513431 - 2²¹ = 1355363416279 is a prime.

It is a super-2 number, since 2×1355365513431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355365513531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119705125 + ... + 119716446.

It is an arithmetic number, because the mean of its divisors is an integer number (88705692426).

Almost surely, 2^{1355365513431} is an apocalyptic number.

1355365513431 is a deficient number, since it is larger than the sum of its proper divisors (773571104793).

1355365513431 is a wasteful number, since it uses less digits than its factorization.

1355365513431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239421631 (or 239421628 counting only the distinct ones).

The product of its digits is 1215000, while the sum is 45.

The spelling of 1355365513431 in words is "one trillion, three hundred fifty-five billion, three hundred sixty-five million, five hundred thirteen thousand, four hundred thirty-one".