31023320133 has 8 divisors (see below), whose sum is σ = 44546305888. Its totient is φ = 19091273904.

The previous prime is 31023320129. The next prime is 31023320147. The reversal of 31023320133 is 33102332013.

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

It is not a de Polignac number, because 31023320133 - 2² = 31023320129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023320183) 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, 397734835 + ... + 397734912.

It is an arithmetic number, because the mean of its divisors is an integer number (5568288236).

Almost surely, 2^31023320133 is an apocalyptic number.

It is an amenable number.

31023320133 is a deficient number, since it is larger than the sum of its proper divisors (13522985755).

31023320133 is a wasteful number, since it uses less digits than its factorization.

31023320133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795469763.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31023320133 its reverse (33102332013), we get a palindrome (64125652146).

It can be divided in two parts, 3102332013 and 3, that multiplied together give a palindrome (9306996039).

The spelling of 31023320133 in words is "thirty-one billion, twenty-three million, three hundred twenty thousand, one hundred thirty-three".