223400131 has 4 divisors (see below), whose sum is σ = 223468000. Its totient is φ = 223332264.

The previous prime is 223400129. The next prime is 223400143. The reversal of 223400131 is 131004322.

It is a happy number.

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 223400131 - 2¹ = 223400129 is a prime.

It is a super-2 number, since 2×223400131² = 99815237061634322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223400101) 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, 28731 + ... + 35668.

It is an arithmetic number, because the mean of its divisors is an integer number (55867000).

Almost surely, 2^223400131 is an apocalyptic number.

223400131 is a deficient number, since it is larger than the sum of its proper divisors (67869).

223400131 is an equidigital number, since it uses as much as digits as its factorization.

223400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67868.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 223400131 is about 14946.5758955020. The cubic root of 223400131 is about 606.7751800753.

Adding to 223400131 its reverse (131004322), we get a palindrome (354404453).

The spelling of 223400131 in words is "two hundred twenty-three million, four hundred thousand, one hundred thirty-one".