31401080 has 48 divisors (see below), whose sum is σ = 72572760. Its totient is φ = 12227840.

The previous prime is 31401079. The next prime is 31401101. The reversal of 31401080 is 8010413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67007 + ... + 67473.

Almost surely, 2^31401080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31401080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36286380).

31401080 is an abundant number, since it is smaller than the sum of its proper divisors (41171680).

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

31401080 is a wasteful number, since it uses less digits than its factorization.

31401080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 31401080 is about 5603.6666567525. Note that the first 4 decimals coincide. The cubic root of 31401080 is about 315.4870436536.

Adding to 31401080 its reverse (8010413), we get a palindrome (39411493).

The spelling of 31401080 in words is "thirty-one million, four hundred one thousand, eighty".