201231402 has 16 divisors (see below), whose sum is σ = 403176960. Its totient is φ = 66958112.

The previous prime is 201231391. The next prime is 201231427. The reversal of 201231402 is 204132102.

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, 26058 + ... + 32885.

It is an arithmetic number, because the mean of its divisors is an integer number (25198560).

Almost surely, 2^201231402 is an apocalyptic number.

201231402 is an abundant number, since it is smaller than the sum of its proper divisors (201945558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201231402 is a wasteful number, since it uses less digits than its factorization.

201231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59517.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201231402 is about 14185.6054505967. The cubic root of 201231402 is about 586.0013065547.

Adding to 201231402 its reverse (204132102), we get a palindrome (405363504).

The spelling of 201231402 in words is "two hundred one million, two hundred thirty-one thousand, four hundred two".