1111215331431 has 12 divisors (see below), whose sum is σ = 1627695697680. Its totient is φ = 730376273760.

The previous prime is 1111215331411. The next prime is 1111215331441. The reversal of 1111215331431 is 1341335121111.

It is a happy number.

1111215331431 is a `hidden beast` number, since 1 + 1 + 1 + 121 + 533 + 1 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 1111215331431 - 2⁵ = 1111215331399 is a prime.

It is a super-2 number, since 2×1111215331431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111215331395 and 1111215331404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111215331411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 869494926 + ... + 869496203.

It is an arithmetic number, because the mean of its divisors is an integer number (135641308140).

Almost surely, 2^{1111215331431} is an apocalyptic number.

1111215331431 is a deficient number, since it is larger than the sum of its proper divisors (516480366249).

1111215331431 is a wasteful number, since it uses less digits than its factorization.

1111215331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738991206 (or 1738991203 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The spelling of 1111215331431 in words is "one trillion, one hundred eleven billion, two hundred fifteen million, three hundred thirty-one thousand, four hundred thirty-one".