1203431681 has 8 divisors (see below), whose sum is σ = 1209546240. Its totient is φ = 1197326592.

The previous prime is 1203431659. The next prime is 1203431707. The reversal of 1203431681 is 1861343021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1203431681 - 2⁶ = 1203431617 is a prime.

It is a super-2 number, since 2×1203431681² = 2896495621668971522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203431651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503816 + ... + 506198.

It is an arithmetic number, because the mean of its divisors is an integer number (151193280).

Almost surely, 2^1203431681 is an apocalyptic number.

It is an amenable number.

1203431681 is a deficient number, since it is larger than the sum of its proper divisors (6114559).

1203431681 is a wasteful number, since it uses less digits than its factorization.

1203431681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1203431681 is about 34690.5128385269. The cubic root of 1203431681 is about 1063.6705787746.

The spelling of 1203431681 in words is "one billion, two hundred three million, four hundred thirty-one thousand, six hundred eighty-one".