31023012003221 has 8 divisors (see below), whose sum is σ = 37540451499840. Its totient is φ = 25026967666368.

The previous prime is 31023012003211. The next prime is 31023012003271. The reversal of 31023012003221 is 12230021032013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023012003221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31023012003193 and 31023012003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023012003211) 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, 130348789811 + ... + 130348790048.

It is an arithmetic number, because the mean of its divisors is an integer number (4692556437480).

Almost surely, 2^{31023012003221} is an apocalyptic number.

It is an amenable number.

31023012003221 is a deficient number, since it is larger than the sum of its proper divisors (6517439496619).

31023012003221 is a wasteful number, since it uses less digits than its factorization.

31023012003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260697579883.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31023012003221 its reverse (12230021032013), we get a palindrome (43253033035234).

The spelling of 31023012003221 in words is "thirty-one trillion, twenty-three billion, twelve million, three thousand, two hundred twenty-one".