31280014943 has 4 divisors (see below), whose sum is σ = 33120015840. Its totient is φ = 29440014048.

The previous prime is 31280014939. The next prime is 31280015009. The reversal of 31280014943 is 34941008213.

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

It is a cyclic number.

It is not a de Polignac number, because 31280014943 - 2² = 31280014939 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 (31280014343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920000423 + ... + 920000456.

It is an arithmetic number, because the mean of its divisors is an integer number (8280003960).

Almost surely, 2^31280014943 is an apocalyptic number.

31280014943 is a deficient number, since it is larger than the sum of its proper divisors (1840000897).

31280014943 is a wasteful number, since it uses less digits than its factorization.

31280014943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840000896.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 31280014943 in words is "thirty-one billion, two hundred eighty million, fourteen thousand, nine hundred forty-three".