31203434399 has 8 divisors (see below), whose sum is σ = 32949341040. Its totient is φ = 29467889856.

The previous prime is 31203434389. The next prime is 31203434461. The reversal of 31203434399 is 99343430213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31203434399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203434389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2584334 + ... + 2596379.

It is an arithmetic number, because the mean of its divisors is an integer number (4118667630).

Almost surely, 2^31203434399 is an apocalyptic number.

31203434399 is a deficient number, since it is larger than the sum of its proper divisors (1745906641).

31203434399 is a wasteful number, since it uses less digits than its factorization.

31203434399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181049.

The product of its (nonzero) digits is 209952, while the sum is 41.

The spelling of 31203434399 in words is "thirty-one billion, two hundred three million, four hundred thirty-four thousand, three hundred ninety-nine".