1161266403431 has 8 divisors (see below), whose sum is σ = 1163224599264. Its totient is φ = 1159308581760.

The previous prime is 1161266403389. The next prime is 1161266403439. The reversal of 1161266403431 is 1343046621611.

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 1161266403431 - 2¹⁰ = 1161266402407 is a prime.

It is a super-2 number, since 2×1161266403431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161266403439) 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, 6510371 + ... + 6686363.

It is an arithmetic number, because the mean of its divisors is an integer number (145403074908).

Almost surely, 2^{1161266403431} is an apocalyptic number.

1161266403431 is a deficient number, since it is larger than the sum of its proper divisors (1958195833).

1161266403431 is a wasteful number, since it uses less digits than its factorization.

1161266403431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187081.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 1161266403431 in words is "one trillion, one hundred sixty-one billion, two hundred sixty-six million, four hundred three thousand, four hundred thirty-one".