127231690 has 8 divisors (see below), whose sum is σ = 229017060. Its totient is φ = 50892672.

The previous prime is 127231681. The next prime is 127231693. The reversal of 127231690 is 96132721.

It can be written as a sum of positive squares in 2 ways, for example, as 127035441 + 196249 = 11271^2 + 443^2 .

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

It is a super-2 number, since 2×127231690² = 32375805880512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127231693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6361575 + ... + 6361594.

Almost surely, 2^127231690 is an apocalyptic number.

127231690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127231690 is a deficient number, since it is larger than the sum of its proper divisors (101785370).

127231690 is a wasteful number, since it uses less digits than its factorization.

127231690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12723176.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 127231690 is about 11279.7025670006. The cubic root of 127231690 is about 502.9580520124.

The spelling of 127231690 in words is "one hundred twenty-seven million, two hundred thirty-one thousand, six hundred ninety".