31442401 has 8 divisors (see below), whose sum is σ = 34366464. Its totient is φ = 28637760.

The previous prime is 31442381. The next prime is 31442413. The reversal of 31442401 is 10424413.

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 31442401 - 2⁷ = 31442273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31442431) 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, 29305 + ... + 30358.

It is an arithmetic number, because the mean of its divisors is an integer number (4295808).

Almost surely, 2^31442401 is an apocalyptic number.

31442401 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31442401 is a deficient number, since it is larger than the sum of its proper divisors (2924063).

31442401 is a wasteful number, since it uses less digits than its factorization.

31442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59711.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 31442401 is about 5607.3524055476. The cubic root of 31442401 is about 315.6253671989.

Adding to 31442401 its reverse (10424413), we get a palindrome (41866814).

The spelling of 31442401 in words is "thirty-one million, four hundred forty-two thousand, four hundred one".