1211302301031 has 12 divisors (see below), whose sum is σ = 1778341812520. Its totient is φ = 794296590480.

The previous prime is 1211302301021. The next prime is 1211302301047. The reversal of 1211302301031 is 1301032031121.

It is not a de Polignac number, because 1211302301031 - 2⁷ = 1211302300903 is a prime.

It is a super-2 number, since 2×1211302301031² (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 = 1211302300995 and 1211302301013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211302301021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1103189161 + ... + 1103190258.

Almost surely, 2^{1211302301031} is an apocalyptic number.

1211302301031 is a deficient number, since it is larger than the sum of its proper divisors (567039511489).

1211302301031 is a wasteful number, since it uses less digits than its factorization.

1211302301031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206379486 (or 2206379483 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1211302301031 its reverse (1301032031121), we get a palindrome (2512334332152).

The spelling of 1211302301031 in words is "one trillion, two hundred eleven billion, three hundred two million, three hundred one thousand, thirty-one".