1279120436231 has 16 divisors (see below), whose sum is σ = 1403608130208. Its totient is φ = 1156001404800.

The previous prime is 1279120436177. The next prime is 1279120436249. The reversal of 1279120436231 is 1326340219721.

It is not a de Polignac number, because 1279120436231 - 2¹⁴ = 1279120419847 is a prime.

It is a super-2 number, since 2×1279120436231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279120436281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23838725 + ... + 23892321.

It is an arithmetic number, because the mean of its divisors is an integer number (87725508138).

Almost surely, 2^{1279120436231} is an apocalyptic number.

1279120436231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1279120436231 is a deficient number, since it is larger than the sum of its proper divisors (124487693977).

1279120436231 is a wasteful number, since it uses less digits than its factorization.

1279120436231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66322.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 1279120436231 in words is "one trillion, two hundred seventy-nine billion, one hundred twenty million, four hundred thirty-six thousand, two hundred thirty-one".