823950131 has 2 divisors, whose sum is σ = 823950132. Its totient is φ = 823950130.

The previous prime is 823950109. The next prime is 823950139. The reversal of 823950131 is 131059328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823950131 - 2¹⁸ = 823687987 is a prime.

It is a super-2 number, since 2×823950131² = 1357787636749834322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (823950139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411975065 + 411975066.

It is an arithmetic number, because the mean of its divisors is an integer number (411975066).

Almost surely, 2^823950131 is an apocalyptic number.

823950131 is a deficient number, since it is larger than the sum of its proper divisors (1).

823950131 is an equidigital number, since it uses as much as digits as its factorization.

823950131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 823950131 is about 28704.5315412044. The cubic root of 823950131 is about 937.4907162577.

The spelling of 823950131 in words is "eight hundred twenty-three million, nine hundred fifty thousand, one hundred thirty-one".