31420441 has 16 divisors (see below), whose sum is σ = 34722576. Its totient is φ = 28256256.

The previous prime is 31420409. The next prime is 31420447. The reversal of 31420441 is 14402413.

It can be written as a sum of positive squares in 8 ways, for example, as 1390041 + 30030400 = 1179^2 + 5480^2 .

It is not a de Polignac number, because 31420441 - 2⁵ = 31420409 is a prime.

It is a super-2 number, since 2×31420441² = 1974488225268962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31420447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107091 + ... + 107383.

It is an arithmetic number, because the mean of its divisors is an integer number (2170161).

Almost surely, 2^31420441 is an apocalyptic number.

It is an amenable number.

31420441 is a deficient number, since it is larger than the sum of its proper divisors (3302135).

31420441 is a wasteful number, since it uses less digits than its factorization.

31420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

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

The square root of 31420441 is about 5605.3939201451. The cubic root of 31420441 is about 315.5518704017.

Adding to 31420441 its reverse (14402413), we get a palindrome (45822854).

The spelling of 31420441 in words is "thirty-one million, four hundred twenty thousand, four hundred forty-one".