1131212190 has 32 divisors (see below), whose sum is σ = 2716281216. Its totient is φ = 301504160.

The previous prime is 1131212189. The next prime is 1131212191. The reversal of 1131212190 is 912121311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1131212189) and next prime (1131212191).

It is a super-2 number, since 2×1131212190² = 2559282037609192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131212191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58885 + ... + 75695.

It is an arithmetic number, because the mean of its divisors is an integer number (84883788).

Almost surely, 2^1131212190 is an apocalyptic number.

1131212190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131212190 is an abundant number, since it is smaller than the sum of its proper divisors (1585069026).

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

1131212190 is a wasteful number, since it uses less digits than its factorization.

1131212190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19064.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 1131212190 is about 33633.4980339542. The cubic root of 1131212190 is about 1041.9527506350.

The spelling of 1131212190 in words is "one billion, one hundred thirty-one million, two hundred twelve thousand, one hundred ninety".