1197731055 has 8 divisors (see below), whose sum is σ = 1916369712. Its totient is φ = 638789888.

The previous prime is 1197730997. The next prime is 1197731077. The reversal of 1197731055 is 5501377911.

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 1197731055 - 2⁸ = 1197730799 is a prime.

It is a super-2 number, since 2×1197731055² = 2869119360222826050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39924354 + ... + 39924383.

It is an arithmetic number, because the mean of its divisors is an integer number (239546214).

Almost surely, 2^1197731055 is an apocalyptic number.

1197731055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1197731055 is a deficient number, since it is larger than the sum of its proper divisors (718638657).

1197731055 is an equidigital number, since it uses as much as digits as its factorization.

1197731055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79848745.

The product of its (nonzero) digits is 33075, while the sum is 39.

The square root of 1197731055 is about 34608.2512560227. The cubic root of 1197731055 is about 1061.9883927714.

The spelling of 1197731055 in words is "one billion, one hundred ninety-seven million, seven hundred thirty-one thousand, fifty-five".