1202312023491 has 8 divisors (see below), whose sum is σ = 1603311835984. Its totient is φ = 801426780000.

The previous prime is 1202312023453. The next prime is 1202312023529. The reversal of 1202312023491 is 1943202132021.

It is an interprime number because it is at equal distance from previous prime (1202312023453) and next prime (1202312023529).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1202312023491 - 2¹⁸ = 1202311761347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202312023411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28617760 + ... + 28659741.

It is an arithmetic number, because the mean of its divisors is an integer number (200413979498).

Almost surely, 2^{1202312023491} is an apocalyptic number.

1202312023491 is a deficient number, since it is larger than the sum of its proper divisors (400999812493).

1202312023491 is an equidigital number, since it uses as much as digits as its factorization.

1202312023491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57284501.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 1202312023491 in words is "one trillion, two hundred two billion, three hundred twelve million, twenty-three thousand, four hundred ninety-one".