1201552502331 has 4 divisors (see below), whose sum is σ = 1602070003112. Its totient is φ = 801035001552.

The previous prime is 1201552502263. The next prime is 1201552502383. The reversal of 1201552502331 is 1332052551021.

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

It is not a de Polignac number, because 1201552502331 - 2¹³ = 1201552494139 is a prime.

It is a super-2 number, since 2×1201552502331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201552572331) 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, 200258750386 + ... + 200258750391.

It is an arithmetic number, because the mean of its divisors is an integer number (400517500778).

Almost surely, 2^{1201552502331} is an apocalyptic number.

1201552502331 is a deficient number, since it is larger than the sum of its proper divisors (400517500781).

1201552502331 is an equidigital number, since it uses as much as digits as its factorization.

1201552502331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400517500780.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 1201552502331 in words is "one trillion, two hundred one billion, five hundred fifty-two million, five hundred two thousand, three hundred thirty-one".