1231020212 has 24 divisors (see below), whose sum is σ = 2197977600. Its totient is φ = 603123840.

The previous prime is 1231020179. The next prime is 1231020221. The reversal of 1231020212 is 2120201321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39164 + ... + 63212.

It is an arithmetic number, because the mean of its divisors is an integer number (91582400).

Almost surely, 2^1231020212 is an apocalyptic number.

It is an amenable number.

1231020212 is a deficient number, since it is larger than the sum of its proper divisors (966957388).

1231020212 is a wasteful number, since it uses less digits than its factorization.

1231020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24311 (or 24309 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1231020212 is about 35085.8976228342. The cubic root of 1231020212 is about 1071.7374201407.

Adding to 1231020212 its reverse (2120201321), we get a palindrome (3351221533).

The spelling of 1231020212 in words is "one billion, two hundred thirty-one million, twenty thousand, two hundred twelve".