1102020312 has 16 divisors (see below), whose sum is σ = 2755050840. Its totient is φ = 367340096.

The previous prime is 1102020307. The next prime is 1102020313. The reversal of 1102020312 is 2130202011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102020313) 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, 22958733 + ... + 22958780.

Almost surely, 2^1102020312 is an apocalyptic number.

1102020312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1102020312 is an abundant number, since it is smaller than the sum of its proper divisors (1653030528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1102020312 is a wasteful number, since it uses less digits than its factorization.

1102020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45917522 (or 45917518 counting only the distinct ones).

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

The square root of 1102020312 is about 33196.6912809093. The cubic root of 1102020312 is about 1032.9117070966.

Adding to 1102020312 its reverse (2130202011), we get a palindrome (3232222323).

The spelling of 1102020312 in words is "one billion, one hundred two million, twenty thousand, three hundred twelve".