312500070 has 24 divisors (see below), whose sum is σ = 812500416. Its totient is φ = 83333328.

The previous prime is 312500059. The next prime is 312500077. The reversal of 312500070 is 70005213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312500077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1736022 + ... + 1736201.

It is an arithmetic number, because the mean of its divisors is an integer number (33854184).

Almost surely, 2^312500070 is an apocalyptic number.

312500070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312500070 is an abundant number, since it is smaller than the sum of its proper divisors (500000346).

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

312500070 is a wasteful number, since it uses less digits than its factorization.

312500070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472236 (or 3472233 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 312500070 is about 17677.6715095626. The cubic root of 312500070 is about 678.6044548179.

Adding to 312500070 its reverse (70005213), we get a palindrome (382505283).

The spelling of 312500070 in words is "three hundred twelve million, five hundred thousand, seventy".