1011375320 has 64 divisors (see below), whose sum is σ = 2499552000. Its totient is φ = 366588288.

The previous prime is 1011375293. The next prime is 1011375347. The reversal of 1011375320 is 235731101.

It is an interprime number because it is at equal distance from previous prime (1011375293) and next prime (1011375347).

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 11450 + ... + 46409.

It is an arithmetic number, because the mean of its divisors is an integer number (39055500).

Almost surely, 2^1011375320 is an apocalyptic number.

1011375320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011375320 is an abundant number, since it is smaller than the sum of its proper divisors (1488176680).

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

1011375320 is a wasteful number, since it uses less digits than its factorization.

1011375320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57912 (or 57908 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 1011375320 is about 31802.1276017816. The cubic root of 1011375320 is about 1003.7774859656. Note that the first 3 decimals are identical.

The spelling of 1011375320 in words is "one billion, eleven million, three hundred seventy-five thousand, three hundred twenty".