31140443402 has 8 divisors (see below), whose sum is σ = 47020007712. Its totient is φ = 15467107500.

The previous prime is 31140443393. The next prime is 31140443417. The reversal of 31140443402 is 20434404113.

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, 51556724 + ... + 51557327.

It is an arithmetic number, because the mean of its divisors is an integer number (5877500964).

Almost surely, 2^31140443402 is an apocalyptic number.

31140443402 is a deficient number, since it is larger than the sum of its proper divisors (15879564310).

31140443402 is a wasteful number, since it uses less digits than its factorization.

31140443402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103114204.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31140443402 its reverse (20434404113), we get a palindrome (51574847515).

The spelling of 31140443402 in words is "thirty-one billion, one hundred forty million, four hundred forty-three thousand, four hundred two".