2131100070 has 32 divisors (see below), whose sum is σ = 5579608320. Its totient is φ = 516630240.

The previous prime is 2131100057. The next prime is 2131100071. The reversal of 2131100070 is 700011312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131100071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3228610 + ... + 3229269.

It is an arithmetic number, because the mean of its divisors is an integer number (174362760).

Almost surely, 2^2131100070 is an apocalyptic number.

2131100070 is an abundant number, since it is smaller than the sum of its proper divisors (3448508250).

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

2131100070 is a wasteful number, since it uses less digits than its factorization.

2131100070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6457900.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 2131100070 is about 46163.8394200482. The cubic root of 2131100070 is about 1286.8698159582.

Adding to 2131100070 its reverse (700011312), we get a palindrome (2831111382).

It can be divided in two parts, 2131 and 100070, that added together give a palindrome (102201).

The spelling of 2131100070 in words is "two billion, one hundred thirty-one million, one hundred thousand, seventy".