31400262643 has 8 divisors (see below), whose sum is σ = 31461267600. Its totient is φ = 31339296768.

The previous prime is 31400262631. The next prime is 31400262683. The reversal of 31400262643 is 34626200413.

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-31400262643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31400262613) 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, 1978323 + ... + 1994131.

It is an arithmetic number, because the mean of its divisors is an integer number (3932658450).

Almost surely, 2^31400262643 is an apocalyptic number.

31400262643 is a deficient number, since it is larger than the sum of its proper divisors (61004957).

31400262643 is a wasteful number, since it uses less digits than its factorization.

31400262643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19541.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 31400262643 in words is "thirty-one billion, four hundred million, two hundred sixty-two thousand, six hundred forty-three".