31123303102 has 8 divisors (see below), whose sum is σ = 47565803016. Its totient is φ = 15268035432.

The previous prime is 31123303069. The next prime is 31123303103. The reversal of 31123303102 is 20130332113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31123303102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123303103) 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, 146807928 + ... + 146808139.

It is an arithmetic number, because the mean of its divisors is an integer number (5945725377).

Almost surely, 2^31123303102 is an apocalyptic number.

31123303102 is a deficient number, since it is larger than the sum of its proper divisors (16442499914).

31123303102 is a wasteful number, since it uses less digits than its factorization.

31123303102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293616122.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31123303102 its reverse (20130332113), we get a palindrome (51253635215).

The spelling of 31123303102 in words is "thirty-one billion, one hundred twenty-three million, three hundred three thousand, one hundred two".