31292681242 has 8 divisors (see below), whose sum is σ = 46941433056. Its totient is φ = 15645536892.

The previous prime is 31292681221. The next prime is 31292681243. The reversal of 31292681242 is 24218629213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31292681195 and 31292681204.

It is not an unprimeable number, because it can be changed into a prime (31292681243) 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, 351958 + ... + 431809.

It is an arithmetic number, because the mean of its divisors is an integer number (5867679132).

Almost surely, 2^31292681242 is an apocalyptic number.

31292681242 is a deficient number, since it is larger than the sum of its proper divisors (15648751814).

31292681242 is a wasteful number, since it uses less digits than its factorization.

31292681242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803732.

The product of its digits is 82944, while the sum is 40.

The spelling of 31292681242 in words is "thirty-one billion, two hundred ninety-two million, six hundred eighty-one thousand, two hundred forty-two".