1213432112431 has 64 divisors (see below), whose sum is σ = 1547471278080. Its totient is φ = 924168960000.

The previous prime is 1213432112429. The next prime is 1213432112461. The reversal of 1213432112431 is 1342112343121.

It is not a de Polignac number, because 1213432112431 - 2¹ = 1213432112429 is a prime.

It is a super-2 number, since 2×1213432112431² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213432112431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213432112461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 648546426 + ... + 648548296.

It is an arithmetic number, because the mean of its divisors is an integer number (24179238720).

Almost surely, 2^{1213432112431} is an apocalyptic number.

1213432112431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213432112431 is a deficient number, since it is larger than the sum of its proper divisors (334039165649).

1213432112431 is a wasteful number, since it uses less digits than its factorization.

1213432112431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016.

The product of its digits is 3456, while the sum is 28.

Adding to 1213432112431 its reverse (1342112343121), we get a palindrome (2555544455552).

The spelling of 1213432112431 in words is "one trillion, two hundred thirteen billion, four hundred thirty-two million, one hundred twelve thousand, four hundred thirty-one".