31430454 has 16 divisors (see below), whose sum is σ = 68575680. Its totient is φ = 9524360.

The previous prime is 31430453. The next prime is 31430473. The reversal of 31430454 is 45403413.

It is a super-2 number, since 2×31430454² = 1975746877292232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238044 + ... + 238175.

It is an arithmetic number, because the mean of its divisors is an integer number (4285980).

Almost surely, 2^31430454 is an apocalyptic number.

31430454 is an abundant number, since it is smaller than the sum of its proper divisors (37145226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31430454 is a wasteful number, since it uses less digits than its factorization.

31430454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476235.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 31430454 is about 5606.2870065668. The cubic root of 31430454 is about 315.5853866436.

Adding to 31430454 its reverse (45403413), we get a palindrome (76833867).

The spelling of 31430454 in words is "thirty-one million, four hundred thirty thousand, four hundred fifty-four".