2061731 has 8 divisors (see below), whose sum is σ = 2366304. Its totient is φ = 1759680.

The previous prime is 2061691. The next prime is 2061733. The reversal of 2061731 is 1371602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2061731 - 2⁶ = 2061667 is a prime.

It is a super-2 number, since 2×2061731² = 8501469432722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061733) 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, 1721 + ... + 2661.

It is an arithmetic number, because the mean of its divisors is an integer number (295788).

2^2061731 is an apocalyptic number.

2061731 is a deficient number, since it is larger than the sum of its proper divisors (304573).

2061731 is an equidigital number, since it uses as much as digits as its factorization.

2061731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2061731 is about 1435.8729052392. The cubic root of 2061731 is about 127.2752621789.

The spelling of 2061731 in words is "two million, sixty-one thousand, seven hundred thirty-one".