31420461 has 16 divisors (see below), whose sum is σ = 43845120. Its totient is φ = 19976880.

The previous prime is 31420457. The next prime is 31420463. The reversal of 31420461 is 16402413.

It is not a de Polignac number, because 31420461 - 2² = 31420457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31420463) 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, 45126 + ... + 45816.

It is an arithmetic number, because the mean of its divisors is an integer number (2740320).

Almost surely, 2^31420461 is an apocalyptic number.

It is an amenable number.

31420461 is a deficient number, since it is larger than the sum of its proper divisors (12424659).

31420461 is a wasteful number, since it uses less digits than its factorization.

31420461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 31420461 is about 5605.3957041408. The cubic root of 31420461 is about 315.5519373543.

Adding to 31420461 its reverse (16402413), we get a palindrome (47822874).

The spelling of 31420461 in words is "thirty-one million, four hundred twenty thousand, four hundred sixty-one".