31201222020023 has 16 divisors (see below), whose sum is σ = 35215610781600. Its totient is φ = 27383385617280.

The previous prime is 31201222019977. The next prime is 31201222020149. The reversal of 31201222020023 is 32002022210213.

It is a happy number.

It is not a de Polignac number, because 31201222020023 - 2¹⁰ = 31201222018999 is a prime.

It is a super-2 number, since 2×31201222020023² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31201222019977 and 31201222020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201222020223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3153536 + ... + 8505717.

It is an arithmetic number, because the mean of its divisors is an integer number (2200975673850).

Almost surely, 2^{31201222020023} is an apocalyptic number.

31201222020023 is a deficient number, since it is larger than the sum of its proper divisors (4014388761577).

31201222020023 is a wasteful number, since it uses less digits than its factorization.

31201222020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667682.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31201222020023 its reverse (32002022210213), we get a palindrome (63203244230236).

The spelling of 31201222020023 in words is "thirty-one trillion, two hundred one billion, two hundred twenty-two million, twenty thousand, twenty-three".