31489066 has 48 divisors (see below), whose sum is σ = 59725512. Its totient is φ = 12364800.

The previous prime is 31489063. The next prime is 31489069. The reversal of 31489066 is 66098413.

It is an interprime number because it is at equal distance from previous prime (31489063) and next prime (31489069).

It can be written as a sum of positive squares in 4 ways, for example, as 20894041 + 10595025 = 4571^2 + 3255^2 .

It is a super-2 number, since 2×31489066² = 1983122555104712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31489063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68076 + ... + 68536.

Almost surely, 2^31489066 is an apocalyptic number.

31489066 is a deficient number, since it is larger than the sum of its proper divisors (28236446).

31489066 is a wasteful number, since it uses less digits than its factorization.

31489066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 31489066 is about 5611.5119174782. The cubic root of 31489066 is about 315.7814343441.

The spelling of 31489066 in words is "thirty-one million, four hundred eighty-nine thousand, sixty-six".