31469340 has 96 divisors (see below), whose sum is σ = 103993344. Its totient is φ = 6958080.

The previous prime is 31469327. The next prime is 31469353. The reversal of 31469340 is 4396413.

It is an interprime number because it is at equal distance from previous prime (31469327) and next prime (31469353).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31469298 and 31469307.

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, 11812 + ... + 14228.

It is an arithmetic number, because the mean of its divisors is an integer number (1083264).

Almost surely, 2^31469340 is an apocalyptic number.

31469340 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 31469340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51996672).

31469340 is an abundant number, since it is smaller than the sum of its proper divisors (72524004).

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

31469340 is a wasteful number, since it uses less digits than its factorization.

31469340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 31469340 is about 5609.7540053018. The cubic root of 31469340 is about 315.7154812315.

The spelling of 31469340 in words is "thirty-one million, four hundred sixty-nine thousand, three hundred forty".