31426430 has 64 divisors (see below), whose sum is σ = 67962240. Its totient is φ = 10235904.

The previous prime is 31426411. The next prime is 31426471. The reversal of 31426430 is 3462413.

31426430 = T₃₅₄₃ + T₃₅₄₄ + ... + T₃₅₄₇.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31426396 and 31426405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229322 + ... + 229458.

It is an arithmetic number, because the mean of its divisors is an integer number (1061910).

Almost surely, 2^31426430 is an apocalyptic number.

31426430 is an abundant number, since it is smaller than the sum of its proper divisors (36535810).

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

31426430 is a wasteful number, since it uses less digits than its factorization.

31426430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 31426430 is about 5605.9281122754. The cubic root of 31426430 is about 315.5719180738.

Adding to 31426430 its reverse (3462413), we get a palindrome (34888843).

The spelling of 31426430 in words is "thirty-one million, four hundred twenty-six thousand, four hundred thirty".