20130310402 has 16 divisors (see below), whose sum is σ = 31975215480. Its totient is φ = 9472036608.

The previous prime is 20130310373. The next prime is 20130310411. The reversal of 20130310402 is 20401303102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20010648681 + 119661721 = 141459^2 + 10939^2 .

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, 339388 + ... + 394264.

Almost surely, 2^20130310402 is an apocalyptic number.

20130310402 is a deficient number, since it is larger than the sum of its proper divisors (11844905078).

20130310402 is a wasteful number, since it uses less digits than its factorization.

20130310402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65685.

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

Adding to 20130310402 its reverse (20401303102), we get a palindrome (40531613504).

The spelling of 20130310402 in words is "twenty billion, one hundred thirty million, three hundred ten thousand, four hundred two".