1213203230031 has 32 divisors (see below), whose sum is σ = 1803209204160. Its totient is φ = 720400794624.

The previous prime is 1213203230009. The next prime is 1213203230081. The reversal of 1213203230031 is 1300323023121.

It is not a de Polignac number, because 1213203230031 - 2⁵ = 1213203229999 is a prime.

It is a super-2 number, since 2×1213203230031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213203230081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1523811 + ... + 2179083.

It is an arithmetic number, because the mean of its divisors is an integer number (56350287630).

Almost surely, 2^{1213203230031} is an apocalyptic number.

1213203230031 is a deficient number, since it is larger than the sum of its proper divisors (590005974129).

1213203230031 is a wasteful number, since it uses less digits than its factorization.

1213203230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656955.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1213203230031 its reverse (1300323023121), we get a palindrome (2513526253152).

The spelling of 1213203230031 in words is "one trillion, two hundred thirteen billion, two hundred three million, two hundred thirty thousand, thirty-one".