1202020311 has 8 divisors (see below), whose sum is σ = 1628967664. Its totient is φ = 788209920.

The previous prime is 1202020307. The next prime is 1202020349. The reversal of 1202020311 is 1130202021.

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

It is not a de Polignac number, because 1202020311 - 2² = 1202020307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202020301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3284026 + ... + 3284391.

It is an arithmetic number, because the mean of its divisors is an integer number (203620958).

Almost surely, 2^1202020311 is an apocalyptic number.

1202020311 is a deficient number, since it is larger than the sum of its proper divisors (426947353).

1202020311 is an equidigital number, since it uses as much as digits as its factorization.

1202020311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568481.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1202020311 is about 34670.1645655166. The cubic root of 1202020311 is about 1063.2545961512.

Adding to 1202020311 its reverse (1130202021), we get a palindrome (2332222332).

The spelling of 1202020311 in words is "one billion, two hundred two million, twenty thousand, three hundred eleven".