31366980 has 96 divisors (see below), whose sum is σ = 101001600. Its totient is φ = 8072064.

The previous prime is 31366969. The next prime is 31366991. The reversal of 31366980 is 8966313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31366969) and next prime (31366991).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 14659 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (1052100).

Almost surely, 2^31366980 is an apocalyptic number.

31366980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31366980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50500800).

31366980 is an abundant number, since it is smaller than the sum of its proper divisors (69634620).

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

31366980 is a wasteful number, since it uses less digits than its factorization.

31366980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 31366980 is about 5600.6231796114. The cubic root of 31366980 is about 315.3728012475.

The spelling of 31366980 in words is "thirty-one million, three hundred sixty-six thousand, nine hundred eighty".