31401056 has 12 divisors (see below), whose sum is σ = 61820892. Its totient is φ = 15700512.

The previous prime is 31401043. The next prime is 31401061. The reversal of 31401056 is 65010413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490610 + ... + 490673.

It is an arithmetic number, because the mean of its divisors is an integer number (5151741).

Almost surely, 2^31401056 is an apocalyptic number.

It is an amenable number.

31401056 is a deficient number, since it is larger than the sum of its proper divisors (30419836).

31401056 is an equidigital number, since it uses as much as digits as its factorization.

31401056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981293 (or 981285 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 31401056 is about 5603.6645152971. The cubic root of 31401056 is about 315.4869632775.

Adding to 31401056 its reverse (65010413), we get a palindrome (96411469).

The spelling of 31401056 in words is "thirty-one million, four hundred one thousand, fifty-six".