1921114031323 has 4 divisors (see below), whose sum is σ = 1921169300688. Its totient is φ = 1921058761960.

The previous prime is 1921114031237. The next prime is 1921114031327. The reversal of 1921114031323 is 3231304111291.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1921114031323 is a prime.

It is a super-2 number, since 2×1921114031323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1921114031327) 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, 27582511 + ... + 27652072.

It is an arithmetic number, because the mean of its divisors is an integer number (480292325172).

Almost surely, 2^{1921114031323} is an apocalyptic number.

1921114031323 is a deficient number, since it is larger than the sum of its proper divisors (55269365).

1921114031323 is an equidigital number, since it uses as much as digits as its factorization.

1921114031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55269364.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 1921114031323 in words is "one trillion, nine hundred twenty-one billion, one hundred fourteen million, thirty-one thousand, three hundred twenty-three".