23161371 has 32 divisors (see below), whose sum is σ = 33619968. Its totient is φ = 14152320.

The previous prime is 23161363. The next prime is 23161373. The reversal of 23161371 is 17316132.

Added to its reverse (17316132) it gives a triangular number (40477503 = T₈₉₉₇).

It is not a de Polignac number, because 23161371 - 2³ = 23161363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23161373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182310 + ... + 182436.

It is an arithmetic number, because the mean of its divisors is an integer number (1050624).

Almost surely, 2^23161371 is an apocalyptic number.

23161371 is a deficient number, since it is larger than the sum of its proper divisors (10458597).

23161371 is a wasteful number, since it uses less digits than its factorization.

23161371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its digits is 756, while the sum is 24.

The square root of 23161371 is about 4812.6262061374. The cubic root of 23161371 is about 285.0502466040.

Adding to 23161371 its reverse (17316132), we get a triangular number (40477503 = T₈₉₉₇).

It can be divided in two parts, 23161 and 371, that added together give a palindrome (23532).

The spelling of 23161371 in words is "twenty-three million, one hundred sixty-one thousand, three hundred seventy-one".