103151720 has 32 divisors (see below), whose sum is σ = 265248000. Its totient is φ = 35366208.

The previous prime is 103151717. The next prime is 103151731. The reversal of 103151720 is 27151301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 103151692 and 103151701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183920 + ... + 184479.

It is an arithmetic number, because the mean of its divisors is an integer number (8289000).

Almost surely, 2^103151720 is an apocalyptic number.

103151720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103151720 is an abundant number, since it is smaller than the sum of its proper divisors (162096280).

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

103151720 is a wasteful number, since it uses less digits than its factorization.

103151720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368417 (or 368413 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 103151720 is about 10156.3635224425. The cubic root of 103151720 is about 468.9848619794.

The spelling of 103151720 in words is "one hundred three million, one hundred fifty-one thousand, seven hundred twenty".