31123233102 has 16 divisors (see below), whose sum is σ = 67034656080. Its totient is φ = 9576379392.

The previous prime is 31123233101. The next prime is 31123233109. The reversal of 31123233102 is 20133232113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123233101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199507827 + ... + 199507982.

It is an arithmetic number, because the mean of its divisors is an integer number (4189666005).

Almost surely, 2^31123233102 is an apocalyptic number.

31123233102 is an abundant number, since it is smaller than the sum of its proper divisors (35911422978).

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

31123233102 is a wasteful number, since it uses less digits than its factorization.

31123233102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399015827.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31123233102 its reverse (20133232113), we get a palindrome (51256465215).

The spelling of 31123233102 in words is "thirty-one billion, one hundred twenty-three million, two hundred thirty-three thousand, one hundred two".