13770831 has 16 divisors (see below), whose sum is σ = 18836064. Its totient is φ = 8945664.

The previous prime is 13770821. The next prime is 13770863. The reversal of 13770831 is 13807731.

It is not a de Polignac number, because 13770831 - 2¹⁹ = 13246543 is a prime.

It is a super-2 number, since 2×13770831² = 379271572861122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13770821) 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, 40695 + ... + 41031.

It is an arithmetic number, because the mean of its divisors is an integer number (1177254).

Almost surely, 2^13770831 is an apocalyptic number.

13770831 is a deficient number, since it is larger than the sum of its proper divisors (5065233).

13770831 is a wasteful number, since it uses less digits than its factorization.

13770831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 13770831 is about 3710.9070319802. The cubic root of 13770831 is about 239.6919137088.

The spelling of 13770831 in words is "thirteen million, seven hundred seventy thousand, eight hundred thirty-one".