120031403 has 2 divisors, whose sum is σ = 120031404. Its totient is φ = 120031402.

The previous prime is 120031399. The next prime is 120031409. The reversal of 120031403 is 304130021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120031403 - 2² = 120031399 is a prime.

It is a super-2 number, since 2×120031403² = 28815075412296818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120031409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60015701 + 60015702.

It is an arithmetic number, because the mean of its divisors is an integer number (60015702).

Almost surely, 2^120031403 is an apocalyptic number.

120031403 is a deficient number, since it is larger than the sum of its proper divisors (1).

120031403 is an equidigital number, since it uses as much as digits as its factorization.

120031403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 120031403 is about 10955.8844006315. The cubic root of 120031403 is about 493.2854369233.

Adding to 120031403 its reverse (304130021), we get a palindrome (424161424).

The spelling of 120031403 in words is "one hundred twenty million, thirty-one thousand, four hundred three".