1202120331 has 4 divisors (see below), whose sum is σ = 1602827112. Its totient is φ = 801413552.

The previous prime is 1202120317. The next prime is 1202120347. The reversal of 1202120331 is 1330212021.

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 1202120331 - 2⁵ = 1202120299 is a prime.

It is a super-2 number, since 2×1202120331² = 2890186580407099122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1202120331.

It is not an unprimeable number, because it can be changed into a prime (1202120131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200353386 + ... + 200353391.

It is an arithmetic number, because the mean of its divisors is an integer number (400706778).

Almost surely, 2^1202120331 is an apocalyptic number.

1202120331 is a deficient number, since it is larger than the sum of its proper divisors (400706781).

1202120331 is an equidigital number, since it uses as much as digits as its factorization.

1202120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400706780.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1202120331 is about 34671.6069861205. The cubic root of 1202120331 is about 1063.2840864391.

Adding to 1202120331 its reverse (1330212021), we get a palindrome (2532332352).

The spelling of 1202120331 in words is "one billion, two hundred two million, one hundred twenty thousand, three hundred thirty-one".