31303012242 has 8 divisors (see below), whose sum is σ = 62606024496. Its totient is φ = 10434337412.

The previous prime is 31303012207. The next prime is 31303012243. The reversal of 31303012242 is 24221030313.

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

31303012242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31303012243) 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, 2608584348 + ... + 2608584359.

It is an arithmetic number, because the mean of its divisors is an integer number (7825753062).

Almost surely, 2^31303012242 is an apocalyptic number.

31303012242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31303012242 is a wasteful number, since it uses less digits than its factorization.

31303012242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217168712.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31303012242 its reverse (24221030313), we get a palindrome (55524042555).

The spelling of 31303012242 in words is "thirty-one billion, three hundred three million, twelve thousand, two hundred forty-two".