1131022402 has 4 divisors (see below), whose sum is σ = 1696533606. Its totient is φ = 565511200.

The previous prime is 1131022391. The next prime is 1131022423. The reversal of 1131022402 is 2042201311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 572692761 + 558329641 = 23931^2 + 23629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282755599 + ... + 282755602.

Almost surely, 2^1131022402 is an apocalyptic number.

1131022402 is a deficient number, since it is larger than the sum of its proper divisors (565511204).

1131022402 is an equidigital number, since it uses as much as digits as its factorization.

1131022402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565511203.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1131022402 is about 33630.6765022650. The cubic root of 1131022402 is about 1041.8944765138.

Adding to 1131022402 its reverse (2042201311), we get a palindrome (3173223713).

The spelling of 1131022402 in words is "one billion, one hundred thirty-one million, twenty-two thousand, four hundred two".