123031001 has 4 divisors (see below), whose sum is σ = 124763904. Its totient is φ = 121298100.

The previous prime is 123030959. The next prime is 123031081. The reversal of 123031001 is 100130321.

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 123031001 - 2²⁶ = 55922137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123031081) 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, 866345 + ... + 866486.

It is an arithmetic number, because the mean of its divisors is an integer number (31190976).

Almost surely, 2^123031001 is an apocalyptic number.

It is an amenable number.

123031001 is a deficient number, since it is larger than the sum of its proper divisors (1732903).

123031001 is an equidigital number, since it uses as much as digits as its factorization.

123031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732902.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 123031001 is about 11091.9340513726. The cubic root of 123031001 is about 497.3607613505.

Adding to 123031001 its reverse (100130321), we get a palindrome (223161322).

The spelling of 123031001 in words is "one hundred twenty-three million, thirty-one thousand, one".