2101131678 has 16 divisors (see below), whose sum is σ = 4202714880. Its totient is φ = 700301976.

The previous prime is 2101131653. The next prime is 2101131679. The reversal of 2101131678 is 8761311012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101131679) 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, 90901 + ... + 111647.

It is an arithmetic number, because the mean of its divisors is an integer number (262669680).

Almost surely, 2^2101131678 is an apocalyptic number.

2101131678 is an abundant number, since it is smaller than the sum of its proper divisors (2101583202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101131678 is a wasteful number, since it uses less digits than its factorization.

2101131678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37631.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 2101131678 is about 45838.1029057704. The cubic root of 2101131678 is about 1280.8091559436.

The spelling of 2101131678 in words is "two billion, one hundred one million, one hundred thirty-one thousand, six hundred seventy-eight".