2137297281 has 16 divisors (see below), whose sum is σ = 3272275968. Its totient is φ = 1215522000.

The previous prime is 2137297271. The next prime is 2137297313. The reversal of 2137297281 is 1827927312.

It is not a de Polignac number, because 2137297281 - 2¹⁵ = 2137264513 is a prime.

It is a super-2 number, since 2×2137297281² = 9136079334739985922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2137297231) 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, 236745 + ... + 245606.

It is an arithmetic number, because the mean of its divisors is an integer number (204517248).

Almost surely, 2^2137297281 is an apocalyptic number.

2137297281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2137297281 is a deficient number, since it is larger than the sum of its proper divisors (1134978687).

2137297281 is a wasteful number, since it uses less digits than its factorization.

2137297281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482572.

The product of its digits is 84672, while the sum is 42.

The square root of 2137297281 is about 46230.9126126664. The cubic root of 2137297281 is about 1288.1160089383.

The spelling of 2137297281 in words is "two billion, one hundred thirty-seven million, two hundred ninety-seven thousand, two hundred eighty-one".