31343555402 has 4 divisors (see below), whose sum is σ = 47015333106. Its totient is φ = 15671777700.

The previous prime is 31343555387. The next prime is 31343555431. The reversal of 31343555402 is 20455534313.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 31290425881 + 53129521 = 176891^2 + 7289^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835888849 + ... + 7835888852.

Almost surely, 2^31343555402 is an apocalyptic number.

31343555402 is a deficient number, since it is larger than the sum of its proper divisors (15671777704).

31343555402 is a wasteful number, since it uses less digits than its factorization.

31343555402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15671777703.

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 31343555402 in words is "thirty-one billion, three hundred forty-three million, five hundred fifty-five thousand, four hundred two".