31304030 has 8 divisors (see below), whose sum is σ = 56347272. Its totient is φ = 12521608.

The previous prime is 31304029. The next prime is 31304107. The reversal of 31304030 is 3040313.

31304030 = 2796² + 2797² + ... + 2799².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31303996 and 31304014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1565192 + ... + 1565211.

It is an arithmetic number, because the mean of its divisors is an integer number (7043409).

Almost surely, 2^31304030 is an apocalyptic number.

31304030 is a deficient number, since it is larger than the sum of its proper divisors (25043242).

31304030 is a wasteful number, since it uses less digits than its factorization.

31304030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130410.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 31304030 is about 5595.0004468275. Note that the first 3 decimals coincide. The cubic root of 31304030 is about 315.1616873799.

Adding to 31304030 its reverse (3040313), we get a palindrome (34344343).

The spelling of 31304030 in words is "thirty-one million, three hundred four thousand, thirty".