1131212412 has 48 divisors (see below), whose sum is σ = 3199392000. Its totient is φ = 342791280.

The previous prime is 1131212371. The next prime is 1131212431. The reversal of 1131212412 is 2142121311.

1131212412 is a `hidden beast` number, since 11 + 31 + 212 + 412 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474912 + ... + 477287.

It is an arithmetic number, because the mean of its divisors is an integer number (66654000).

Almost surely, 2^1131212412 is an apocalyptic number.

1131212412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131212412 is an abundant number, since it is smaller than the sum of its proper divisors (2068179588).

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

1131212412 is a wasteful number, since it uses less digits than its factorization.

1131212412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952223 (or 952215 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1131212412 is about 33633.5013342352. The cubic root of 1131212412 is about 1041.9528187959.

Adding to 1131212412 its reverse (2142121311), we get a palindrome (3273333723).

The spelling of 1131212412 in words is "one billion, one hundred thirty-one million, two hundred twelve thousand, four hundred twelve".