2129297631 has 8 divisors (see below), whose sum is σ = 2892630960. Its totient is φ = 1392748032.

The previous prime is 2129297629. The next prime is 2129297633. The reversal of 2129297631 is 1367929212.

It is an interprime number because it is at equal distance from previous prime (2129297629) and next prime (2129297633).

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

It is not a de Polignac number, because 2129297631 - 2¹ = 2129297629 is a prime.

It is a super-2 number, since 2×2129297631² = 9067816802764424322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129297633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6695746 + ... + 6696063.

It is an arithmetic number, because the mean of its divisors is an integer number (361578870).

Almost surely, 2^2129297631 is an apocalyptic number.

2129297631 is a deficient number, since it is larger than the sum of its proper divisors (763333329).

2129297631 is a wasteful number, since it uses less digits than its factorization.

2129297631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13391865.

The product of its digits is 81648, while the sum is 42.

The square root of 2129297631 is about 46144.3130948983. The cubic root of 2129297631 is about 1286.5069112760.

The spelling of 2129297631 in words is "two billion, one hundred twenty-nine million, two hundred ninety-seven thousand, six hundred thirty-one".