31123223231033 has 8 divisors (see below), whose sum is σ = 31144031505216. Its totient is φ = 31102415586000.

The previous prime is 31123223231029. The next prime is 31123223231069. The reversal of 31123223231033 is 33013232232113.

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

It is a cyclic number.

It is not a de Polignac number, because 31123223231033 - 2² = 31123223231029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31123223230987 and 31123223231005.

It is not an unprimeable number, because it can be changed into a prime (31123223231333) 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, 140654183 + ... + 140875283.

It is an arithmetic number, because the mean of its divisors is an integer number (3893003938152).

Almost surely, 2^{31123223231033} is an apocalyptic number.

It is an amenable number.

31123223231033 is a deficient number, since it is larger than the sum of its proper divisors (20808274183).

31123223231033 is a wasteful number, since it uses less digits than its factorization.

31123223231033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314575.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31123223231033 its reverse (33013232232113), we get a palindrome (64136455463146).

The spelling of 31123223231033 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred twenty-three million, two hundred thirty-one thousand, thirty-three".