31194669940 has 48 divisors (see below), whose sum is σ = 74891561472. Its totient is φ = 10691836416.

The previous prime is 31194669853. The next prime is 31194669941. The reversal of 31194669940 is 4996649113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31194669941) 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, 415749 + ... + 485011.

It is an arithmetic number, because the mean of its divisors is an integer number (1560240864).

Almost surely, 2^31194669940 is an apocalyptic number.

It is an amenable number.

31194669940 is an abundant number, since it is smaller than the sum of its proper divisors (43696891532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31194669940 is a wasteful number, since it uses less digits than its factorization.

31194669940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72496 (or 72494 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 31194669940 in words is "thirty-one billion, one hundred ninety-four million, six hundred sixty-nine thousand, nine hundred forty".