1201202312031 has 6 divisors (see below), whose sum is σ = 1735070006280. Its totient is φ = 800801541348.

The previous prime is 1201202312021. The next prime is 1201202312071. The reversal of 1201202312031 is 1302132021021.

1201202312031 is a `hidden beast` number, since 120 + 1 + 202 + 312 + 0 + 31 = 666.

It is not a de Polignac number, because 1201202312031 - 2²⁹ = 1200665441119 is a prime.

It is a super-2 number, since 2×1201202312031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201202311995 and 1201202312013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201202312021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66733461771 + ... + 66733461788.

It is an arithmetic number, because the mean of its divisors is an integer number (289178334380).

Almost surely, 2^{1201202312031} is an apocalyptic number.

1201202312031 is a deficient number, since it is larger than the sum of its proper divisors (533867694249).

1201202312031 is a wasteful number, since it uses less digits than its factorization.

1201202312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133466923565 (or 133466923562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1201202312031 its reverse (1302132021021), we get a palindrome (2503334333052).

The spelling of 1201202312031 in words is "one trillion, two hundred one billion, two hundred two million, three hundred twelve thousand, thirty-one".