1230202021031 has 4 divisors (see below), whose sum is σ = 1237074658200. Its totient is φ = 1223329383864.

The previous prime is 1230202020989. The next prime is 1230202021043. The reversal of 1230202021031 is 1301202020321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230202021031 - 2¹⁰ = 1230202020007 is a prime.

It is a super-2 number, since 2×1230202021031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230202021231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3436318316 + ... + 3436318673.

It is an arithmetic number, because the mean of its divisors is an integer number (309268664550).

Almost surely, 2^{1230202021031} is an apocalyptic number.

1230202021031 is a deficient number, since it is larger than the sum of its proper divisors (6872637169).

1230202021031 is an equidigital number, since it uses as much as digits as its factorization.

1230202021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872637168.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1230202021031 its reverse (1301202020321), we get a palindrome (2531404041352).

The spelling of 1230202021031 in words is "one trillion, two hundred thirty billion, two hundred two million, twenty-one thousand, thirty-one".