1231606106 has 16 divisors (see below), whose sum is σ = 2059032960. Its totient is φ = 549074880.

The previous prime is 1231606091. The next prime is 1231606109. The reversal of 1231606106 is 6016061321.

It is not an unprimeable number, because it can be changed into a prime (1231606109) 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, 952610 + ... + 953901.

It is an arithmetic number, because the mean of its divisors is an integer number (128689560).

Almost surely, 2^1231606106 is an apocalyptic number.

1231606106 is a deficient number, since it is larger than the sum of its proper divisors (827426854).

1231606106 is a wasteful number, since it uses less digits than its factorization.

1231606106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906549.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1231606106 is about 35094.2460525939. The cubic root of 1231606106 is about 1071.9074213927.

Adding to 1231606106 its reverse (6016061321), we get a palindrome (7247667427).

The spelling of 1231606106 in words is "one billion, two hundred thirty-one million, six hundred six thousand, one hundred six".