31444097 has 4 divisors (see below), whose sum is σ = 31959636. Its totient is φ = 30928560.

The previous prime is 31444087. The next prime is 31444121. The reversal of 31444097 is 79044413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79044413 = 7 ⋅11292059.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 31013761 = 656^2 + 5569^2 .

It is a cyclic number.

It is not a de Polignac number, because 31444097 - 2¹² = 31440001 is a prime.

It is a super-2 number, since 2×31444097² = 1977462472290818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31444087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257678 + ... + 257799.

It is an arithmetic number, because the mean of its divisors is an integer number (7989909).

Almost surely, 2^31444097 is an apocalyptic number.

It is an amenable number.

31444097 is a deficient number, since it is larger than the sum of its proper divisors (515539).

31444097 is an equidigital number, since it uses as much as digits as its factorization.

31444097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515538.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 31444097 is about 5607.5036335253. The cubic root of 31444097 is about 315.6310420305.

The spelling of 31444097 in words is "thirty-one million, four hundred forty-four thousand, ninety-seven".