1970731 has 12 divisors (see below), whose sum is σ = 2356608. Its totient is φ = 1642032.

The previous prime is 1970729. The next prime is 1970743. The reversal of 1970731 is 1370791.

It is a happy number.

It is not a de Polignac number, because 1970731 - 2¹ = 1970729 is a prime.

It is a super-2 number, since 2×1970731² = 7767561348722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1970731.

It is not an unprimeable number, because it can be changed into a prime (1970711) 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, 1270 + ... + 2356.

It is an arithmetic number, because the mean of its divisors is an integer number (196384).

2^1970731 is an apocalyptic number.

1970731 is the 811-st hex number.

1970731 is a deficient number, since it is larger than the sum of its proper divisors (385877).

1970731 is a wasteful number, since it uses less digits than its factorization.

1970731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 1970731 is about 1403.8272685769. The cubic root of 1970731 is about 125.3744717139.

It can be divided in two parts, 1970 and 731, that added together give a triangular number (2701 = T₇₃).

The spelling of 1970731 in words is "one million, nine hundred seventy thousand, seven hundred thirty-one".