123031402 has 32 divisors (see below), whose sum is σ = 203918400. Its totient is φ = 55323648.

The previous prime is 123031379. The next prime is 123031409. The reversal of 123031402 is 204130321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123031409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212938 + ... + 213514.

It is an arithmetic number, because the mean of its divisors is an integer number (6372450).

Almost surely, 2^123031402 is an apocalyptic number.

123031402 is a deficient number, since it is larger than the sum of its proper divisors (80886998).

123031402 is a wasteful number, since it uses less digits than its factorization.

123031402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

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

The square root of 123031402 is about 11091.9521275563. The cubic root of 123031402 is about 497.3613017060.

Adding to 123031402 its reverse (204130321), we get a palindrome (327161723).

The spelling of 123031402 in words is "one hundred twenty-three million, thirty-one thousand, four hundred two".