31123430022 has 8 divisors (see below), whose sum is σ = 62246860056. Its totient is φ = 10374476672.

The previous prime is 31123430011. The next prime is 31123430047. The reversal of 31123430022 is 22003432113.

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

31123430022 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2593619163 + ... + 2593619174.

It is an arithmetic number, because the mean of its divisors is an integer number (7780857507).

Almost surely, 2^31123430022 is an apocalyptic number.

31123430022 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.

31123430022 is a wasteful number, since it uses less digits than its factorization.

31123430022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187238342.

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

Adding to 31123430022 its reverse (22003432113), we get a palindrome (53126862135).

The spelling of 31123430022 in words is "thirty-one billion, one hundred twenty-three million, four hundred thirty thousand, twenty-two".