1213031103031 has 16 divisors (see below), whose sum is σ = 1340531458560. Its totient is φ = 1088411425920.

The previous prime is 1213031103001. The next prime is 1213031103047. The reversal of 1213031103031 is 1303011303121.

It is a cyclic number.

It is not a de Polignac number, because 1213031103031 - 2¹³ = 1213031094839 is a prime.

It is a super-2 number, since 2×1213031103031² (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 (1213031103001) 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, 2225071 + ... + 2716063.

It is an arithmetic number, because the mean of its divisors is an integer number (83783216160).

Almost surely, 2^{1213031103031} is an apocalyptic number.

1213031103031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213031103031 is a deficient number, since it is larger than the sum of its proper divisors (127500355529).

1213031103031 is a wasteful number, since it uses less digits than its factorization.

1213031103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493926.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1213031103031 its reverse (1303011303121), we get a palindrome (2516042406152).

The spelling of 1213031103031 in words is "one trillion, two hundred thirteen billion, thirty-one million, one hundred three thousand, thirty-one".