231400153 has 2 divisors, whose sum is σ = 231400154. Its totient is φ = 231400152.

The previous prime is 231400121. The next prime is 231400177. The reversal of 231400153 is 351004132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225090009 + 6310144 = 15003^2 + 2512^2 .

It is a cyclic number.

It is not a de Polignac number, because 231400153 - 2⁵ = 231400121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231400153.

It is not a weakly prime, because it can be changed into another prime (231400453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115700076 + 115700077.

It is an arithmetic number, because the mean of its divisors is an integer number (115700077).

Almost surely, 2^231400153 is an apocalyptic number.

It is an amenable number.

231400153 is a deficient number, since it is larger than the sum of its proper divisors (1).

231400153 is an equidigital number, since it uses as much as digits as its factorization.

231400153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 231400153 is about 15211.8425248226. The cubic root of 231400153 is about 613.9333333454.

Adding to 231400153 its reverse (351004132), we get a palindrome (582404285).

The spelling of 231400153 in words is "two hundred thirty-one million, four hundred thousand, one hundred fifty-three".