23078351 has 4 divisors (see below), whose sum is σ = 23422872. Its totient is φ = 22733832.

The previous prime is 23078347. The next prime is 23078357. The reversal of 23078351 is 15387032.

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 23078351 - 2² = 23078347 is a prime.

It is a super-2 number, since 2×23078351² = 1065220569758402, which 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 (23078357) 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, 172160 + ... + 172293.

It is an arithmetic number, because the mean of its divisors is an integer number (5855718).

Almost surely, 2^23078351 is an apocalyptic number.

23078351 is a deficient number, since it is larger than the sum of its proper divisors (344521).

23078351 is an equidigital number, since it uses as much as digits as its factorization.

23078351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344520.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 23078351 is about 4803.9932347996. The cubic root of 23078351 is about 284.7092592645.

The spelling of 23078351 in words is "twenty-three million, seventy-eight thousand, three hundred fifty-one".