23190761 has 4 divisors (see below), whose sum is σ = 25299024. Its totient is φ = 21082500.

The previous prime is 23190757. The next prime is 23190767. The reversal of 23190761 is 16709132.

23190761 = T₁₁₆₉ + T₁₁₇₀ + ... + T₁₂₀₁.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23190761 - 2² = 23190757 is a prime.

It is a super-2 number, since 2×23190761² = 1075622791518242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23190767) 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, 1054115 + ... + 1054136.

It is an arithmetic number, because the mean of its divisors is an integer number (6324756).

Almost surely, 2^23190761 is an apocalyptic number.

It is an amenable number.

23190761 is a deficient number, since it is larger than the sum of its proper divisors (2108263).

23190761 is a wasteful number, since it uses less digits than its factorization.

23190761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108262.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 23190761 is about 4815.6786645290. The cubic root of 23190761 is about 285.1707645953.

Adding to 23190761 its reverse (16709132), we get a palindrome (39899893).

The spelling of 23190761 in words is "twenty-three million, one hundred ninety thousand, seven hundred sixty-one".