1223170377431 has 4 divisors (see below), whose sum is σ = 1227821215632. Its totient is φ = 1218519539232.

The previous prime is 1223170377367. The next prime is 1223170377463. The reversal of 1223170377431 is 1347730713221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223170377431 - 2⁶ = 1223170377367 is a prime.

It is a super-2 number, since 2×1223170377431² (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 (1223170377031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325418706 + ... + 2325419231.

It is an arithmetic number, because the mean of its divisors is an integer number (306955303908).

Almost surely, 2^{1223170377431} is an apocalyptic number.

1223170377431 is a deficient number, since it is larger than the sum of its proper divisors (4650838201).

1223170377431 is an equidigital number, since it uses as much as digits as its factorization.

1223170377431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650838200.

The product of its (nonzero) digits is 148176, while the sum is 41.

The spelling of 1223170377431 in words is "one trillion, two hundred twenty-three billion, one hundred seventy million, three hundred seventy-seven thousand, four hundred thirty-one".