1213123023031 has 8 divisors (see below), whose sum is σ = 1230235737984. Its totient is φ = 1196011043640.

The previous prime is 1213123023029. The next prime is 1213123023041. The reversal of 1213123023031 is 1303203213121.

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 1213123023031 - 2¹ = 1213123023029 is a prime.

It is a super-2 number, since 2×1213123023031² (a number of 25 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 = 1213123022993 and 1213123023011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213123023001) 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, 3717400 + ... + 4030546.

It is an arithmetic number, because the mean of its divisors is an integer number (153779467248).

Almost surely, 2^{1213123023031} is an apocalyptic number.

1213123023031 is a deficient number, since it is larger than the sum of its proper divisors (17112714953).

1213123023031 is an equidigital number, since it uses as much as digits as its factorization.

1213123023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367781.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1213123023031 its reverse (1303203213121), we get a palindrome (2516326236152).

The spelling of 1213123023031 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, twenty-three thousand, thirty-one".