12031402 has 4 divisors (see below), whose sum is σ = 18047106. Its totient is φ = 6015700.

The previous prime is 12031387. The next prime is 12031417. The reversal of 12031402 is 20413021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12031387) and next prime (12031417).

It can be written as a sum of positive squares in only one way, i.e., 8649481 + 3381921 = 2941^2 + 1839^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3007849 + ... + 3007852.

Almost surely, 2^12031402 is an apocalyptic number.

12031402 is a deficient number, since it is larger than the sum of its proper divisors (6015704).

12031402 is an equidigital number, since it uses as much as digits as its factorization.

12031402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015703.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12031402 is about 3468.6311421078. The cubic root of 12031402 is about 229.1423763272.

Adding to 12031402 its reverse (20413021), we get a palindrome (32444423).

The spelling of 12031402 in words is "twelve million, thirty-one thousand, four hundred two".