373324991 has 4 divisors (see below), whose sum is σ = 402042312. Its totient is φ = 344607672.

The previous prime is 373324961. The next prime is 373324999. The reversal of 373324991 is 199423373.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199423373 = 19 ⋅10495967.

It is a cyclic number.

It is not a de Polignac number, because 373324991 - 2¹⁸ = 373062847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373324999) 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, 14358641 + ... + 14358666.

It is an arithmetic number, because the mean of its divisors is an integer number (100510578).

Almost surely, 2^373324991 is an apocalyptic number.

373324991 is a deficient number, since it is larger than the sum of its proper divisors (28717321).

373324991 is a wasteful number, since it uses less digits than its factorization.

373324991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28717320.

The product of its digits is 122472, while the sum is 41.

The square root of 373324991 is about 19321.6197819955. The cubic root of 373324991 is about 720.0495021263.

The spelling of 373324991 in words is "three hundred seventy-three million, three hundred twenty-four thousand, nine hundred ninety-one".