1971031 has 12 divisors (see below), whose sum is σ = 2208816. Its totient is φ = 1749440.

The previous prime is 1971029. The next prime is 1971049. The reversal of 1971031 is 1301791.

It is not a de Polignac number, because 1971031 - 2¹ = 1971029 is a prime.

It is a super-2 number, since 2×1971031² = 7769926405922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1970993 and 1971011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27726 + ... + 27796.

It is an arithmetic number, because the mean of its divisors is an integer number (184068).

2^1971031 is an apocalyptic number.

1971031 is a deficient number, since it is larger than the sum of its proper divisors (237785).

1971031 is an equidigital number, since it uses as much as digits as its factorization.

1971031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 1971031 is about 1403.9341152632. The cubic root of 1971031 is about 125.3808332168.

The spelling of 1971031 in words is "one million, nine hundred seventy-one thousand, thirty-one".