31200043429 has 16 divisors (see below), whose sum is σ = 33143685120. Its totient is φ = 29328704640.

The previous prime is 31200043409. The next prime is 31200043439. The reversal of 31200043429 is 92434000213.

It is a cyclic number.

It is not a de Polignac number, because 31200043429 - 2⁵ = 31200043397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31200043397 and 31200043406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200043409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56412 + ... + 256090.

It is an arithmetic number, because the mean of its divisors is an integer number (2071480320).

Almost surely, 2^31200043429 is an apocalyptic number.

It is an amenable number.

31200043429 is a deficient number, since it is larger than the sum of its proper divisors (1943641691).

31200043429 is a wasteful number, since it uses less digits than its factorization.

31200043429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199860.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 31200043429 in words is "thirty-one billion, two hundred million, forty-three thousand, four hundred twenty-nine".