31403240402 has 8 divisors (see below), whose sum is σ = 47672389296. Its totient is φ = 15512443972.

The previous prime is 31403240377. The next prime is 31403240419. The reversal of 31403240402 is 20404230413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94587908 + ... + 94588239.

It is an arithmetic number, because the mean of its divisors is an integer number (5959048662).

Almost surely, 2^31403240402 is an apocalyptic number.

31403240402 is a deficient number, since it is larger than the sum of its proper divisors (16269148894).

31403240402 is a wasteful number, since it uses less digits than its factorization.

31403240402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189176232.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 31403240402 its reverse (20404230413), we get a palindrome (51807470815).

The spelling of 31403240402 in words is "thirty-one billion, four hundred three million, two hundred forty thousand, four hundred two".