123631051 has 2 divisors, whose sum is σ = 123631052. Its totient is φ = 123631050.

The previous prime is 123631037. The next prime is 123631061. The reversal of 123631051 is 150136321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123631051 - 2¹⁵ = 123598283 is a prime.

It is not a weakly prime, because it can be changed into another prime (123631061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61815525 + 61815526.

It is an arithmetic number, because the mean of its divisors is an integer number (61815526).

Almost surely, 2^123631051 is an apocalyptic number.

123631051 is a deficient number, since it is larger than the sum of its proper divisors (1).

123631051 is an equidigital number, since it uses as much as digits as its factorization.

123631051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 123631051 is about 11118.9500853273. The cubic root of 123631051 is about 498.1680306409.

Adding to 123631051 its reverse (150136321), we get a palindrome (273767372).

The spelling of 123631051 in words is "one hundred twenty-three million, six hundred thirty-one thousand, fifty-one".