31104270 has 32 divisors (see below), whose sum is σ = 82945440. Its totient is φ = 8294400.

The previous prime is 31104259. The next prime is 31104287. The reversal of 31104270 is 7240113.

It is a super-2 number, since 2×31104270² = 1934951224465800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57331 + ... + 57870.

It is an arithmetic number, because the mean of its divisors is an integer number (2592045).

Almost surely, 2^31104270 is an apocalyptic number.

31104270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31104270 is an abundant number, since it is smaller than the sum of its proper divisors (51841170).

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

31104270 is a wasteful number, since it uses less digits than its factorization.

31104270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115217 (or 115211 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31104270 is about 5577.1202246321. The cubic root of 31104270 is about 314.4898772821.

Adding to 31104270 its reverse (7240113), we get a palindrome (38344383).

The spelling of 31104270 in words is "thirty-one million, one hundred four thousand, two hundred seventy".