31378701694 has 64 divisors (see below), whose sum is σ = 52761341952. Its totient is φ = 13920192000.

The previous prime is 31378701649. The next prime is 31378701737. The reversal of 31378701694 is 49610787313.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16082419 + ... + 16084369.

It is an arithmetic number, because the mean of its divisors is an integer number (824395968).

Almost surely, 2^31378701694 is an apocalyptic number.

31378701694 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31378701694 is a deficient number, since it is larger than the sum of its proper divisors (21382640258).

31378701694 is a wasteful number, since it uses less digits than its factorization.

31378701694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 31378701694 in words is "thirty-one billion, three hundred seventy-eight million, seven hundred one thousand, six hundred ninety-four".