1231365122 has 32 divisors (see below), whose sum is σ = 2078576640. Its totient is φ = 542836800.

The previous prime is 1231365101. The next prime is 1231365133. The reversal of 1231365122 is 2215631321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 1231365091 and 1231365100.

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, 687404 + ... + 689192.

It is an arithmetic number, because the mean of its divisors is an integer number (64955520).

Almost surely, 2^1231365122 is an apocalyptic number.

1231365122 is a deficient number, since it is larger than the sum of its proper divisors (847211518).

1231365122 is a wasteful number, since it uses less digits than its factorization.

1231365122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its digits is 2160, while the sum is 26.

The square root of 1231365122 is about 35090.8125012802. The cubic root of 1231365122 is about 1071.8375047241.

Adding to 1231365122 its reverse (2215631321), we get a palindrome (3446996443).

The spelling of 1231365122 in words is "one billion, two hundred thirty-one million, three hundred sixty-five thousand, one hundred twenty-two".