1231030402 has 16 divisors (see below), whose sum is σ = 2159416512. Its totient is φ = 515314800.

The previous prime is 1231030393. The next prime is 1231030421. The reversal of 1231030402 is 2040301321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021849 + ... + 1023052.

It is an arithmetic number, because the mean of its divisors is an integer number (134963532).

Almost surely, 2^1231030402 is an apocalyptic number.

1231030402 is a deficient number, since it is larger than the sum of its proper divisors (928386110).

1231030402 is a wasteful number, since it uses less digits than its factorization.

1231030402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044953.

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

The square root of 1231030402 is about 35086.0428375729. The cubic root of 1231030402 is about 1071.7403773015.

Adding to 1231030402 its reverse (2040301321), we get a palindrome (3271331723).

The spelling of 1231030402 in words is "one billion, two hundred thirty-one million, thirty thousand, four hundred two".