1081273012 has 18 divisors (see below), whose sum is σ = 1937269698. Its totient is φ = 528059952.

The previous prime is 1081273003. The next prime is 1081273021. The reversal of 1081273012 is 2103721801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1081273003) and next prime (1081273021).

It can be written as a sum of positive squares in only one way, i.e., 963854116 + 117418896 = 31046^2 + 10836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65703 + ... + 80494.

Almost surely, 2^1081273012 is an apocalyptic number.

It is an amenable number.

1081273012 is a deficient number, since it is larger than the sum of its proper divisors (855996686).

1081273012 is a wasteful number, since it uses less digits than its factorization.

1081273012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146287 (or 146242 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1081273012 is about 32882.7160070454. The cubic root of 1081273012 is about 1026.3885245201.

Adding to 1081273012 its reverse (2103721801), we get a palindrome (3184994813).

The spelling of 1081273012 in words is "one billion, eighty-one million, two hundred seventy-three thousand, twelve".